Printing RGB colors - Conversion to CMYK?
Hi,
I have been working for a little while in converting my old RGB colors to CMYK printer friendly colors.
However, I carefully choosed my printing friendly CMYK colors to be as close as possible to the RGB colors but the prints are dull !
On the other hand, when I print my file withj RGB colors using the PDF Distiller tagged with Adobe1998 profile and send the file to the printer, colors look smarter !
It means that the CMYK colors I picked myself are not good enough anf the Color Managment in Adobe PDF or Illustrator are better than me ! As follows:
- In Illustrator -> Print -> Color Management tab -> Color Handling: Let Illustrator determine colors
- in Acrobat Reader -> Print -> Color Management tab of the plotter: Application managed colors
Both ouput similar quality prints, and better than my own CMYK colors !
Are the Application Color Management engines in Illustrator and in Adobe Reader similar in their conversion?
How can I find out which are the CMYK colors printed when the application (Reader or Illustrator) manages colors, from my initial RGB colors? I would like to use them directly in my document...
Thanks
Hi,
Thanks for your response. I put these color issues on hold because I had no time to search more on that recently...
However, I have still lots of questions about color conversion!
When I said "carefully choose" CMYK colors, it means CMYK colors printable and which look similar to my old RGB colors on-screen. But of course, screen is not enough!
What I noticed is that when I print my old RGB colors (not in printer color space), Adobe Reader or Illustrator were able to make good conversion to CMYK for printing.
Now, I would like to find out to which CMYK color codes Adobe Reader or Illustrator converted my RGB colors? Then, I would be able to use these CMYK color codes directly in my application...
Is there any way to find out that?
Cheers
Similar Messages
-
Hi,
I have to convert CMYK color array in the RGB color space and vice versa.
I am using the following code;-
UID colorUID = iDrawing->GetColorUID(kFalse);
UIDRef colourUIDRef(iDrawing->GetDataBase(), colorUID);
InterfacePtr<IColorData> colorData(colourUIDRef, UseDefaultIID());
char
strColor[16]={0};
if(colorData->GetColorSpace() == kPMCsCalRGB)
ColorArray rgbColor = Utils<IUIColorUtils>()->GetRGBColorValue(m_DB, colorUID);
sprintf(strColor,
"#%.2x%.2x%.2x", ToInt32(rgbColor[0] * 255), ToInt32(rgbColor[1] * 255), ToInt32(rgbColor[2] * 255));
else
ErrorCode errStatus = GetRGBColorStr(colourUIDRef, strColor);
ErrorCode GetRGBColorStr(UIDRef colourUIDRef,
char* strColor){
ErrorCode status = kFailure;
do
I
nterfacePtr<IColorData> colorData(colourUIDRef, UseDefaultIID()); IDataBase* m_DB = colourUIDRef.GetDataBase();
// If color sapce is other then RGB then get the colour array
ColorArray colourArray = colorData->GetColorData();
// If the colour space is CMYK then convert it to RGB
if(colorData->GetColorSpace() == ICMSProfile::kSourceTypeBuiltInCMYK) {
IDocument* document = Utils<ILayoutUIUtils>()->GetFrontDocument();
ColorArray rgbColor = Utils<IColorSystemUtils>()->ColorTransform( document, colourArray, ICMSProfile::kSourceTypeBuiltInCMYK,ICMSProfile::kSourceTypeBuiltInRGB);
sprintf(strColor,
"#%.2x%.2x%.2x", ToInt32(Round(rgbColor[0] * 255)), ToInt32(Round (rgbColor[1] * 255)), ToInt32(Round(rgbColor[2] * 255))); status = kSuccess;
}while(kFalse);
return status;
}while(kFalse);
return status;I did some experiments with Illustrator CS6 and the MacBeth RGB test chart and verified my results with Photoshop CS6. I discovered Illustrator is (mostly) doing what it should be doing, within a 1% error (probably rounding) on the output CMYK values. Here's a summary, in case anyone else needs this info:
Assuming the source file's elements are all untagged, when a mixed RGB/CMYK PDF is opened in Illustrator and CMYK mode is
chosen, Illustrator will use the profiles and rendering intent defined in
Color Settings to make the color conversions from RGB to CMYK. Thus, we
have control over the profiles used for this conversion.
If the RGB elements in the PDF file have embedded ICC profiles,
Illustrator will use the embedded ICC profile instead of the RGB profile
defined in Color Settings. This ONLY happens, however, if the PDF file
also includes the correct CMYK output intent profile.
If the PDF doesn't contain a CMYK output intent, Illustrator will fall
back on the Color Settings RGB profile for RGB->CMYK conversion. I believe it
would be more correct for Illustrator to use the embedded RGB profile and
the CMYK profile defined in Color Settings, but that's not how it seems to work.
If the PDF contains the incorrect CMYK output intent, Illustrator will
ignore the Color Settings and respect the embedded RGB and CMYK profiles
for the conversion, as might be expected. -
Hi,
Acrobat 9 is converting black I have set at R=G=B=0 in the original document to C=M=Y=0, K=100 (i.e. pure black) when I am converting the document to PDF (with the option to convert to CMYK selected).
Is there a way to force Acrobat to convert the original black to rich black in pdf, not pure black? And if so, how can I set the CMYK levels of the rich black it would be converted to?
I tried the Advanced>Print Production>Convert Colors, Promote Gray to CMYK and it did not affect the black area mentioned. I assume because although it was pure black, it was process black in CMYK rather than greyscale space.
Is there a way to achieve this?
(surprisingly, Acrobat 8 converts the same original document to a rich black where the black has components in all 4 colours CMYK)
Thanks.Hi
"I'm sorry, is not enough to English"
This problem for correct "primarily RGB color space add document"
I am prepared add video lesson... wait me -
InDesign vs Illustrator - Color conversion - Farbumwandlung
English version further down...
Situation:
1. InDesign verwendet standardmäßig die Pantone-bzw. HKS Umrechnungstabelle zu CMYK
2. Illustrator verwendet die Umrechnung über Lab-Farben
3. Die Werte unterscheiden sich drastisch, wenn CMYK als Endprodukt steht
4. Man kann InDesign umstellen, sodass auch InDesign über Lab-Werte geht - die Farbumrechnung ist dann in beiden Programmen identisch
5. Ich habe einen HKS Vollton-Farbfächer sowie einen HKS CMYK-Fächer (basierend auf der CMYK-Tabelle) meiner Druckerei. Gleich benannte Farben beider Fächer sind völlig anders (Bsp Rot siehe unten).
Anmerkung:
- Alle beteiligten Geräte sind farbkalibriert.
- solides Grundwissen zu Farben habe ich, jedoch weniger zu Farbumrechnung, speziell wenn es von Volltonfarben in gerasterten CMYK-Druck geht.
- aktuelle Versionen bei mir: CC
Probleme/Fragen:
A. Die Unterschiede beider Varianten im Druckergebnis sind drastisch. zB. HKS 16 K aus InDesign direkt zu CMYK (per CMYK-Tabelle) ist eine Rot, das stark ins Orange geht CMYK (30,100,90,0), während über Lab-Werte es ein eher kräftiges Rot ist, das schon einen leichten Blaustich aufweist ca. - gerundet - CMYK (10,93,65,33). Die Unterschiede im Druck sind sehr deutlich.Wie kommt es, dass es so stark unterschiedliche Werte sind?
B. Welche Variante kommt dem Ergebnis am nächsten und vor allem warum? Mein Eindruck: Das Druckergebnis per Lab-Farben kommt dem Volltonfarbfächer am nächsten. Die Ergebnisse per Pantone-Definition erscheinen geradezu "abwegig".
C. Was verwende ich ab sofort für zufriedene Kunden?
(D. Neugier: Angenommen der Weg über Lab-Werte ist die beste Lösung,... Warum ist der default in InDesign immer noch die jeweilige CMYK-Tabelle???)
Die eine Technote von Adobe dazu habe ich gelesen. Weiterführende Infos oder Links hierzu wären klasse.
Danke vorab.
situation:
1. InDesign uses by default Pantone- resp.HKS tables to convert to CMYK
2. Illustrator converts by means of lab-colors
3. Diferences between 1.and 2. are drastic when used to convert to CMYK
4. One can configure to use lab-colors in InDesign. As a result CMYK-Colors are idnetical in Illustrator and InDesign
5. I got a printed HKS spot color palette as well as a CMYK color palette based on standard-tables.Colors with the same name look totally different in both printed palettes (see red further down).
remark:
- all devices are color calibrated
- I got IMHO a solidknowledge on colors,but not aboutcolor conversions esspecially from spot colors to rastered CMYK colors.
- using CC version
problems/issues:
A. Differences in print are totally different e.g. HKS 16 K from InDesign directly to CMYK (by CMYK-table) is a red, drifting strongly towards orange CMYK (30,100,90,0), while by means of the lab-values the same red (HKS16) is strong with a touch to blue app. - rounded - CMYK (10,93,65,33). Differences in print are drastic. How comes the results differ so drastically?
B. Which variant is closer to the intended result? My opinion: using lab color conversion is actually really close to the spot colors. Results by standard table to CMYK look almost "idiotic".
C. What should I use for satisfied customers?
(D. Out of curiosity: Suggested the variant bymeans of lab-colors is best... Why is the conversion by CMYK-tables the default in InDesign???)
Already read a technote from Adobe about it. Asnwers, additional infos and links would be grand.
TIA!!Prior to CS6 the Pantone Solid libraries had dual Lab/CMYK definitions. If you had Use Standard Lab Values for Spots checked in Ink Manager a Pantone Solid would be defined as Lab and the color conversion to CMYK would be color managed—the values you get depend on your document's CMYK profile assignment. If you had it unchecked the defintion was predefined CMYK (for one set of printing conditions) and the output values were unchanged by your color management settings.
CS6+ took away the dual definition for Pantone and solid colors are always defined as Lab and CMYK conversions are always color managed. If you don't want a color managed conversion use Pantone + Color Bridge—those libraries are defined as process CMYK (not spot).
The HKS libraries still have dual definitions, so if you don't want them to be color managed uncheck Use Standard Lab Values.
while by means of the lab-values the same red (HKS16) is strong with a touch to blue app. - rounded - CMYK (10,93,65,33). Differences in print are drastic. How comes the results differ so drastically?
The conversion depends on your document's assigned profile. Looks like you are using ISO Coated ECI, but if you change the profile assignment you'll get different numbers. US SWOP returns 24|100|83|19. I think Lab conversions are better assuming the press is printing close to the assigned profile. -
Choosing profiles for forced RGB to CMYK color conversion
When a mixed RGB/CMYK PDF is opened in Illustrator CS6, Illustrator forces a conversion to one color space or the other. See this screenshot: http://imgur.com/sK8iEdn
I assume this is a limitation of Illustrator and there's no way to keep both color spaces. Under that assumption, Is it possible to choose the profiles used for the conversion from RGB to CMYK? Can Illustrator be made to use the RGB and CMYK profiles defined in its Color Settings to make this conversion?I did some experiments with Illustrator CS6 and the MacBeth RGB test chart and verified my results with Photoshop CS6. I discovered Illustrator is (mostly) doing what it should be doing, within a 1% error (probably rounding) on the output CMYK values. Here's a summary, in case anyone else needs this info:
Assuming the source file's elements are all untagged, when a mixed RGB/CMYK PDF is opened in Illustrator and CMYK mode is
chosen, Illustrator will use the profiles and rendering intent defined in
Color Settings to make the color conversions from RGB to CMYK. Thus, we
have control over the profiles used for this conversion.
If the RGB elements in the PDF file have embedded ICC profiles,
Illustrator will use the embedded ICC profile instead of the RGB profile
defined in Color Settings. This ONLY happens, however, if the PDF file
also includes the correct CMYK output intent profile.
If the PDF doesn't contain a CMYK output intent, Illustrator will fall
back on the Color Settings RGB profile for RGB->CMYK conversion. I believe it
would be more correct for Illustrator to use the embedded RGB profile and
the CMYK profile defined in Color Settings, but that's not how it seems to work.
If the PDF contains the incorrect CMYK output intent, Illustrator will
ignore the Color Settings and respect the embedded RGB and CMYK profiles
for the conversion, as might be expected. -
For P.O.D. Printing: How to Set Adobe RGB Color Space
Hello and thanks in advance,
(I'm using InDesign CS 5.5 on a Mac.)
I need to set the proper PDF export settings
For printing a book on demand, with color drawings inside on the text pages.
The onnly instructions that I have been able to find, say this:
"Submit your graphics in the Adobe RGB color space, withprofile embedded."
The Big Question: How do I do that ?
I know enough to start with
File --> Adobe PDF Presets --> Press Quality
Then I click on the "Output Menu"
and here's where I start to get lost.
for
Color Conversion ...
I think I should select "Convert to Destination"
for
Destination
I think it should be "Adobe RGB (1998)"
Now in order to embed this profile,
What should I select under:
Profile Inclusion Policy ?
And is there anything else I should be doing to get these inside color images printing nicely ?
Thanks again,
IthacaAuthor (aka ZorbaTheGeek, but the forum would not let me log in with my old screen name)Virtually all digital printing is done via either PostScript or PDF. In the former case, the PDF is converted to PostScript viat use of Acrobat and in the latter case, the PDF is sent directly to the digital printer.
In either case, CMYK is in fact the actual destination color space. There are no real RGB printers!!! What is true is that non-PostScript / non-PDF printers (typically low end laser and inkjet printers as well as specialized inkjet and dye sublimation photo printers) do take in RGB via drivers and convert that to CMYK, but I don't believe that is what you are dealing with.
Our recommendation at Adobe for best printing results, whether for offset or digital printing, is to export PDF as PDF/X-4 with no color conversion using the default CMYK color space (SWOP CMYK) or if instructed otherwise by your print service provider, one of the other CMYK color spaces provided by Adobe or by the print service provider themselves. FWIW, most on-demand digital print devices do have settings to fully emulate SWOP CMYK printing conditions. Using PDF/X-4 in this manner allows the existing color content in your InDesign document to be properly tagged in the output PDF file and converted to CMYK at the digital printing device's RIP.
(It might also assist us if you can provide a pointer to the explicit instructions provided by your print service provider.)
- Dov -
In the toolbar I click on color face and see the RGB color space view. How do I put them into CMYK?
In the toolbar left I click on color face and see the RGB color space view. How do I put them into CMYK?
German:
In der Werkzeugleiste klicke ich auf Farbfläche und sehe den RGB-Farbraumansicht. Wie stelle ich diese in CMYK um?I design print material. I hope Adobe will change it.
The ID Color Picker works the same as Photoshop's classic color picker except that it doesn't have an H,S,B presentation (which is the more intuitive interface). So both programs let you choose an R, G, B and L, a, b presentation of color via the 6 radio buttons, and you can pick RGB, Lab or CMYK versions of the chosen color—the mode you get depends on where your cursor is. If you pick an out-of-gamut CMYK color it is brought into gamut in the Swatches or Color panels after you click OK.
So here I'm picking RGB, Lab and CMYK Swatches or Colors of the color selection because my cursor is in a respective RGB, Lab or CMYK field, note that the Add Swatch button changes accordingly:
When I click inside the color field, the CMYK values are a color managed conversion of the chosen color, but I also have the option of entering any value. So it would be unlikely I would get a blue gray color like 50|0|0|50 with a color managed conversion, but I have the option to enter those specific numbers.
The 3 versions of the color added as swatches
An InDesign document can have a mix of RGB, Lab, and CMYK colors. Colors and swatches can be converted to any CMYK destination space when you export or print. -
Convert 2 RGB colors to CMYK in AI CS5
Hi,
I created a logo in RGB and now I need to have business cards printed and the file has to be in CMYK. If I change the color mode to CMYK, the colors fade of course and don't match the RGB colors. I only have two colors in the logo:
#CCFFFF
R = 204
G = 255
B = 255
#0000CC
R = 0
B = 0
G = 204
The printer told me to use a CMYK color pantone guide book. I am using AI CS5 and was able to locate the Pantone guidebooks that come with the program. However, I am unsure which Pantone guide I am supposed to use since there are several. What would be the best way for me to recreate the logo in CMYK mode keeping in mind that I want the two colors to match the RGB colors listed above? I just googled CCFFFF and discovered that in CMYK it is 20,0,0,0 and # 0000CC = CMYK 100,100, 0, 20). The color doesn't match exactly in AI, but I am assuming that this is the exact match for the printers? Please correct me if I am wrong.
Any assistance is greatly appreciated.
Thanks!You're working backwards, typically colors would be chosen from the Pantone Spot Color guides and then converted to CMYK and finally RGB for web work. It appears you've got a very light Blue ( 20% C ) and a very dark Purple ( 100%C, 100%M, 20%K ). The closest Pantone to the light Blue is 628C ( 19C, 6Y ); and 662 ( 100C, 72M, 18K ) for the Purple ( these are older PMS numbers; not the "+" series ). I'm showing you these numbers so that you'll have an idea of their relationship to Spot colors. You have not mentioned what type of paper these cards will be printed on...coated or uncoated. That makes a big difference, too. Most of the time, stationery items are printed on uncoated paper using Pantone ( or other ) Spot Colors. I often see coated, glossy business cards similar to those you would buy from VistaPrint online. The danger is trying to match the coated paper color on a uncoated sheet in the future. If you are planning for coated paper, the 20% and 100-100-20 combo will be OK ( although the 100C-100M-20K is a little on the dark side...almost Black ). The dark Purple is a little troublesome because it may look good on the monitor, but you might not like the printed version ( too dark ). If I were you I'd venture into a local print shop and ask to see their Spot Color guide for the paper you plan on using. It's best to use your visual sense this way and then apply the CMYK equivalents in your file. Good luck.
-
I have a client that was originally going with a metallic Pantone color and last minute decided to change their mind to cut costs. So after talking to the printer (because the conversion color is way off) he requested that I export the document in 5 color processing. He wants CMYK + the color that would originally have been the metallic pantone so he can go in and grab that one color and color correct as needed on his printer. Can someone please let me know how I export CMYK + one color which will also be in CMYK.
Thanks!Incase anyone comes across this same issue, you can create a new swatch as a "Spot Color" even though it is CMYK and it will export as CMYK + 1 other color. Hope this helps anyone else who comes across it.
-
Proper color workflow with CMYK inkjet printer
Hi, I work in an academic science group that has a networked HP DesignJet 800ps printer (postscript RIP). Unlike many inkjets, it appears to be a true CMYK printer - that is, our i1 Match software recognizes it as a CMYK device. We do all our printing in house - we don't have to worry about commercial printing or publishing, and our color management needs are basically confined to trying to have the printer's output match what we see on our monitors when we print photos in Photoshop or posters in Illustrator.
Having previously worked only with RGB printers and in Photoshop, I am pretty much lost now as to how to set up our color management workflow. (And don't even ask about my colleagues. :-)) I've never had to worry about either CMYK workspaces or printers before. I want to keep things as simple as possible for the staff here, given that none, including myself, are graphics specialists.
I've looked at the "Color Workflows for Adobe Creative Suite 3" document published by Adobe, and although it is very meticulous, none of the examples seem to match our situation. Specifically, all the info regarding CMYK printing involves working with commercial presses, which is not relevant to us.
I would like to avoid making my colleagues work in different color spaces depending on whether they are working in Illustrator or Photoshop - ideally, I would like it if we could stay in RGB at all times. First question: Is this unrealistic given that we have a CMYK printer?
No doubt I will have more questions, but I want to start simple for now. Thanks for helping me out - this is not my area of expertise.> profile them as RGB devices" (to quote the book). The printers that I've profiled in the past with i1 worked this way.
As Peter points out in his post, it is most likely that your RIP is a CMYK RIP (most RIP's are.) If that is the case, you'll be profiling a CMYK device, not an RGB device (as you have in the past.) It is a totally different exercise to profile a CMYK device - ink limits and Kgen are variables that must be dealt with.
> Yes, details would be very helpful. Thanks.
Color management is all about moving from one device/color space to another device/color space while maintaining color appearance as closely as possible.
1) Based on the description of your workflow, step one is to create your original art in a well-behaved RGB color space (like Adobe98) while viewing it on a well-calibrated monitor.
2) If your final output is to be on the HP 800ps, step two would be to preview that art on your monitor as it would look on the HP. This is called soft-proofing - a process by which the art is viewed through the HP profile on-screeen so you can see what happens to all those beautiful, rich RGB colors when they're squeezed into the smaller gamut of the HP profile.
To do this, you go to View > Proof Set-Up > Custom, and choose the HP 800ps profile from the pop-up of all the profiles on your system. You can also choose from among 4 rendering intents - Relative Colorimetric, Perceptual, Absolute Colorimetric, and Saturation. Choosing the correct rendering intent is key - this willl determine how Photoshop deals with the out-of-gamut colors. Without getting into an explanation of what each RI does, the important thing is to choose the one that LOOKS the best on screen. There's no magic to it. In general, for photographic images, you'll be choosing from Relative or Perceptual. For vector graphics (which it sounds like you're doing), throw Saturation into the mix as well. Just try them and see which looks best.
Additionally, be sure to check "Black Point Compensation."
This will give you a good idea of what the final printed version will look like. While you're in soft-proof mode, you can edit the RGB file to alter the way out-of-gamut colors appear. In fact, there's no reason why you couldn't create your art from the beginning while in soft-proof mode. Using a well-built profile and a good calibrated monitor, you should be able to get an extremely close match between monitor and print.
3) When you print, be sure to choose the same profile/rendering intent that you used in Proof Setup.
Again, it all starts with a good profile. Good luck. -
Converting to .jpg to print (RGB vs.CMYK)
Hi all,
I am fairly new to adobe and all things it has to offer. I am slowly learning how to do everything myself. I am currently using CS6. I made myself a 16x20" poster in Illustrator, converted it to a .jpg using the export menu. I put it to my flash drive and printed it out at a local fed ex office. When converting it to jpg, I kept it in CMYK color mode, and set it to be at the highest resolution and the highest quality file I could have.
Now, I made another poster for a friend and did the exact same thing. Instead of taking her .jpg somewhere to get printed, she is trying to upload it to a photo printing site (walmart, snapfish, shutterfly) to get it printed and mailed to her. Her poster keeps getting errors on the photo uploading site saying it is corrupted and not a valid file type. I was confused, so I tried messing around with the illustrator file a bit, I ended up changing the color mode to RGB when I converted it to a jpg (I still made the artwork in CMYK mode). This uploaded fine to all the photo sharing sites, and was also half the size of the original .jpg (12 MB vs. 24). So then I googled it, and came across a website that says printers only print in CMYK. So if that is the case, what will happen when she prints this poster? And why won't these photo uploading sites allow me to upload a poster that is in CMYK mode? If printers only print in CMYK, you would think it wouldn't be a problem.
On a side note, when I try to upload the CMYK .jpg image to Fed Ex office online, it perfectly uploads. So maybe this is just a problem with simple photo uploading sites?
Thanks for the help! Again, I am fairly new to illustrator so I don't understand color modes much or much else.I suggest you get your hands on Adobe's Print Publishing Guide. I am sure there are many online "photo" print services out there. The key is they are "photographic" printers which are RGB based. It wouldn't surprise me if they incorprated some type of default rejection coordinance where they reject CMYK files. You should be looking at PDF instead of JPEG anyway. And, since that is a large format print job, a medium resolution based PDF is adequate and small enough to send FTP. The advantage to PDF is it can honor a well established color workflow. Focus on reading the various RGB color spaces and the different levels of PDF. Also, spend some time on color management and converting from RGB to CMYK. I'd be interested in learning which color settings and workspace profiles you have in place.
-
Why do I get two different RGB equivalents for one CMYK color?
I’m helping someone incorporate their blue logo into business cards and a branding guide. The Illustrator file they gave me of their logo is set to the CMYK color space, so I used these CMYK values for their branding guide. When I click on the RGB tab to see the converted values for the CMYK color, they are insanely different from the RGB equivalent I get when using an online color converter, like Adobe Kuler. In both InDesign and Illustrator, the CMYK values for the blue logo are 79, 56, 2, 0 and when I click on the RGB tab in InDesign or Illustrator, these programs tell me that the RGB equivalent is 69, 112, 179. However, when I use the Adobe Kuler website and plug in the CMYK values, the website (and other websites like it) tell me that the RGB equivalent to this CMYK color is actually 54, 112, 250. I’m not sure which RGB value is actually correct.
That said, I tried plugging in the RGB values I get from the design software into the Adobe Kuler color converter, and I get totally different CMYK values than what the design software tells me. Which color values do I include on the client's branding guide?
I've heard that blue colors are notoriously hard to convert between RGB and CMYK, and I'm wondering if that's why I'm getting these drastically different values from different color conversion tools. I've also read that different ICC profiles might affect the CMYK/RGB values in the design program, but I'm not well-versed in this. Please help!!the CMYK values for the blue logo are 79, 56, 2, 0 and when I click on the RGB tab in InDesign or Illustrator, these programs tell me that the RGB equivalent is 69, 112, 179.
69|112|179 is the conversion you'll get using the default North American General Purpose Color Settings—or US Web Coated SWOP v2 converted to sRGB. As Willi implies there are many flavors of CMYK and RGB so different sources and destinations, as well as the conversion intent, will produce different results.
So "branding" color this way doesn't really work because 79|56|2|0 CMYK will look very different on newsprint than it will on a GRAcol profiled press with glossy paper, and 69|112|179 RGB will look very different in a CC app with a ProPhoto RGB assignment then it will look in a web browser with no profile assigned.
The best you can do is qualify the values—79|56|2|0 US Web Coated (SWOP) v2 CMYK = 69|112|179 sRGB IEC6196-2.1 RGB -
Do photos prepared with photoshop (windows) to be assembled with indesign cs5.5 and to be printed in a magazine: must they all be placed all cmyk color?
Save them as PSD or PDF in Photoshop, Import images in RGB with color profile.
If the printer needs CMYK you should convert them on export to PDF, better is to do it later.
Results of converting in Photoshop or InDesign are exactly the very same. But importing RGB in InDesign gives you much more flexibility. In Photoshop you can turn on the CMYK preview, even if you work in RGB, you can even see the different plates.
There is an article to this topic: http://indesignsecrets.com/import-rgb-images-indesign-convert-cmyk-export.php
Re: Re: Converting Images to CMYK for Print Publication
https://www.linkedin.com/groupItem?view=&gid=100302&type=member&item=5948763899443625986&c ommentID=5949299003979034624&r… -
How to Get RGB Values from a CMYK Color in the DOM (CS5)
(CS5, Actionscript)
Hi all,
I have an InDesign document containing TextFrames whose border colors are specified as a CMYK array.
I would like to be able to get its color specification as its closest RGB equivalent.
Does the InDesign DOM contain a method for doing this for me automatically? If not, what workarounds are there?
TIA,
mlavieHere's how to convert RGB to CMYK:
function rgb2CMYK (r,g,b){
var color = app.documents[0].colors.add({space:ColorSpace.RGB,colorValue:[r,g,b]});
color.space = ColorSpace.CMYK;
var retVal = color.colorValue;
color.remove();
return retVal;
The same idea for the reverse.
For info on converting to grayscale, check out this:
http://in-tools.com/article/scripts-blog/convert-colors-to-grayscal-in-indesign/
HTH,
Harbs -
PS CC - I have a B/W background which I flattened - Then, change to RGB and add an RGB color graphic - print out makes background a greenish color - Can't figure out how to adjust.
Thanks,
DaveIf the grayscale looks ok on screen, you are probably not setting up your print correctly. What OS? What printer?
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Stop sales order replication from CRM to R/3
Hi friends, How can we stop the sales order Replication from CRM to R/3? Pls Guide me. Thanking u in advance.
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Not able to save excel or word file
Not able to save word or excel....the error say this is not a valid file name..
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Based on deliveries we prepared A/R Invoice. In order to receive the payment we went to Option: Banking -> Incoming Payments Then the following error appears: Confirmation amount must be greater than Zero.
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Value too large for defined data type
Hi, i have a Sun Netra t1 105. Sometimes when I try to start top, i get the error message in $SUBJECT. Does someone have a hint? Thanks in advance Tosh42
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What do I do when I get a message from iTunes and it won't let me download music
The message is MZCommerce.CreditBalance Mismatch.Mobile_message