Determine closest PMS color from CMYK values?

In Illustrator CS3 is there a way to determine CMYK values to the closest PMS color? I know how to do it in Photoshop but cannot find a solution in Illy Forums, Illy Help, or from any intelligent person I might happen to know.
Thanks to anyone!

I use un script to know what PMS values is closet to a certain CMYK,
on the other way, what CMYK is close to certain PMS, just doble click on the PMS on the swatches palete and convert it to CMYK process..
A quick way to do it, may be there is some more technical method out there..
If you wish, here you can download the script wich is not mine, dont remember the author...sorry.
http://marizmendi.googlepages.com/index322

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How to convert PMS colors to CMYK?

I am not an Illustrator user but need to know how to change PMS colors to CMYK colors in an AI file. It would also be helpful to know how to change the colors as well as how to convert them. Thanks in advance.

Thanks Scott. I actually figured that out just after posting. I am a Photoshop
and Lightroom user who has never opened AI before today. I just needed to
modify an AI file that a designer created for me. My apologies for the dumb
question.
Joel Pickford
PICKFORD PICTURES
1920 N. Echo Ave
Fresno, CA 93704
(510) 386-1506
http://joelpickford.com/

Coverting PMS Colors to CMYK or RGB

HI there, I have been given some PSM colors to use for a
website but cant find how to convert them to CMYK or RGB. Does
anyone know anything about PMS colors and how I would go about
converting?
1. Example: PMS 8520 Metallic Light Brown
Cheers
Mally

quote:
Originally posted by:
MalRom
HI there, I have been given some PSM colors to use for a
website but cant find how to convert them to CMYK or RGB. Does
anyone know anything about PMS colors and how I would go about
converting?
1. Example: PMS 8520 Metallic Light Brown
Cheers
Mally
Years ago, Pantone made a product called ColorWeb Pro that
had software and also a fan of ink samples and Pantone's
recommendations for CMYK and RGB (Web) values that would be the
best representation for each ink. For the Web, they'd researched
the ink colors and tried to account for variations in graphics
card, monitor, and printer hardware. Because of that variation,
there's really no hard and fast conversion you can use. (Plus, the
RGB colors that are best for the Web won't be the same as the CMYK
colors that are best for print.)
Pantone has a number of current products for color matching.
You might be better off contacting them and getting advice on what
product would work best for you.
Pantone Web site
For a metallic color, you might want to use a subtle gradient
to simulate a reflective effect, though.
Good luck!

Matching PMS Color from Client

This may be a newbie question, I am a video & photoshop guy.
Anyways, a client has requested a logo in a PMS color. I know where the color swatch libraries are, but there is no library named PMS, there are tons of Pantone ones for coated, uncoated, ect.
Is there a search function to the pantone colors? They specified "PMS 192 Red". Says nothing of coated or whatever I just want to know how on earth do I find that actual color?

Ah, it took me a while to find this! Here is a little more how-to:
From the Swatches Palette, open the drop-down menu, then....
Open Swatch Library\Color Books\Pantone (coated or uncoated, or whatever else you want)
THEN go to the drop-down menu again and select Large List View. All the color numbers show up. WHEW!

Selecting by CMYK value or Swatch Name

I am new at scripting so please forgive me. What I want my script to do is look in an open document for any items that are colored a certain swatch color or CMYK value.
I do have named swatches. For instance "032 (Red)". This swatch is a PANTONE swatch. The other CMYK values I need to search for are C:0, M:98, Y:82, K:0. What I would like the script to do is search the document for any items that have those CMYK values OR that swatch "032 (Red)" applied to it and then apply the "032 (Red)" swatch to it and then set the stroke properties to a line weight of 1.6, then a round join, and a dash of 6,4,6,4,30,4.
I know this may be asking a lot...and I am sorry that I don't even have a script to start with and edit. But being so new...I don't know where to start. I have the scripting guide but if someone could get me going on this I think I could make some headway.
Much appreciated!

Check out IColorData in SnpManipulateSwatch.cpp in the SDK examples.
The information you are looking for is obtained by calling GetColorData()
]PMReal _SafeColourElement(const PMReal &TheGivenColour)
] if (1.0 < TheGivenColour) return PMReal(1.0);
] else if (0.0 > TheGivenColour) return PMReal(0.0);
] else return TheGivenColour;
] ColorArray colorArray = iColorData->GetColorData();
]uint16 CyanComponent = ToUInt16(0x0ffff * _SafeColourElement(colorArray[0]));
]uint16 MagentaComponent = ToUInt16(0x0ffff * _SafeColourElement(colorArray[1]));
]uint16 YellowComponent = ToUInt16(0x0ffff * _SafeColourElement(colorArray[2]));
]uint16 BlackComponent = ToUInt16(0x0ffff * _SafeColourElement(colorArray[3]));

Convert from spot color to custom CMYK value in Applescript

I thought this would be very simple and it's not apparently. I am trying to convert a spot color into a custom CMYK value. Basically:
tell application "Adobe Illustrator"
          set theList to every path item of current document
          repeat with k from 1 to count of theList
                    if fill color of item k of theList = {name:"Dark Green"} then
                              set fill color of item k of theList to {cyan:0.0, magenta:100.0, yellow:0.0, black:0.0}
                    end if
          end repeat
end tell
But this script obviously doesn't work. From what I can tell, the fill color simply returns the tint of the item, not the name of it. I can't find anything that returns the name of a spot color so I can set the correct corresponding color. In the above example, I made the color obviously changed so I could visually see the result.
Any advice would be greatly appreciated! I'm a first time poster here.
Thanks!

tell application "Adobe Illustrator"
          tell current document
                    set theList to every path item
                    set sw to every swatch
                    repeat with i from 1 to count of sw
                              set swname to name of item i of sw
                              if swname = "Dark Green" then
                                        set swco to color of item i of sw
                                        repeat with k from (count of theList) to 1 by -1
                                                  set co to fill color of item k of theList
                                                  if swco = co then
                                                            set fill color of item k of theList to {cyan:0.0, magenta:100.0, yellow:0.0, black:0.0}
                                                  end if
                                        end repeat
                              end if
                    end repeat
          end tell
end tell

InDesign seeing spot channel color from Photoshop as a lab value

Does anyone know why Indesign sees a spot color that is created in Photoshop as a lab value rather then a cmyk value? FYI - I'm using CS4 6.0.5 and not planning on switching to 5 for a while and also on a Mac - using Leapord 10.5.8, and about to switch to SnowLeapord.
Anyways, If I place a Photoshop tiff into Indesign the spot color shows in the swatches as a lab value, and in Illustrator it is a CMYK value?
I can get it to see the color as CMYK in Indesign if I use a color library swatch from Photoshop, but no other way.
I'm using the color swatch for a RIP that uses that channel to print White ink, and sometimes it's useful to create the channel in Photoshop, the RIP sees the channel by a certain spot color designation. The spot color needs to be named in a particular way in order for proper work flow, so it's not desirable to have the swatch named a Pantone color.
Any ideas?
Thanks

You can take a custom spot colour and rename it to whatever you like in photoshop, when I import the graphic into InDesign CS4 I see the swatch as Lab spot (all Pantone Solid spots are defined as Lab, cmyk values are only determined by an app' that is asked to convert)
and when placed into Illustrator CS4 I see the same and if I double click on the spot swatch (still with the custom name I gave it in photoshop), I have a choice of Lab, cmyk etc at that time.
Indesign will correctly see the swatch as Lab until you request the app' to convert to cmyk at output or double click on the swatch and change it to cmyk.
You don't want the swatch to be cmyk, if you do that it will output as cmyk... if you want it to separate at the rip it needs to be a spot, which is seen by default as Lab in any application or can be converted to cmyk on request. You can't have it as a cmyk spot, that does not make sense unless you are outputting as only cmyk.

Photoshop CS2: Get CMYK color from pixel?

Hi, in Photoshop CS3 I can use colorSamplers to pick up a CMYK color from a pixel. But I haven't found anything in the CS2 scripting reference about that.
I cannot use channels["cyan"].histogram, because I need the calculated %-value (0100) from Photoshop, not the color index number (0255).
Example:
A pixel was filled with 70% cyan, Photoshop uses internally 69,8% and that's the value I want to read through a script.
Any suggestions? :-)

[email protected] wrote:
> Hi, in Photoshop CS3 I can use colorSamplers to pick up a CMYK color from a pixel. But I haven't found anything in the CS2 scripting reference about that.
>
> I cannot use channels["cyan"].histogram, because I need the calculated %-value (0100) from Photoshop, not the color index number (0255).
>
> Example:
> A pixel was filled with 70% cyan, Photoshop uses internally 69,8% and that's the value I want to read through a script.
>
> Any suggestions? :-)
Try this:
var cyanPercent = (channels["cyan"].histogram/255) * 100;
-X
for photoshop scripting solutions of all sorts
contact: [email protected]

Color shift when pasting from CMYK document to RGB document

Hello,
We're creating an image for a client that will eventually be printed 4c process, and we have to use some very specific CMYK values. However, since we need to use certain layer effects, we need to work in RGB. I assumed that since the CMYK values we use are within the RGB gamut, there would be no color shift when copying from a CMYK doc and pasting into an RGB doc, but I'm apprently mistaken.
I'm not very familiar with color management, since we don't do any heavy duty color work in house, so this is likely a very rudimentary question: how do I keep colors from shifting when pasting from a CMYK document into an RGB document (which will eventually be converted back to CMYK for print)?
Any help is greatly appreciated. Thanks.

x
x
x
you have two possible issues at work that would explain a change
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you are discarding profile information information when pasting (and not Converting to the destination)...

CMYK values differ from PhotoShop

Why are the CMYK values for a given RGB color differ in kuler
from those generated by PhotoShop? What color profiles is Kuler
referencing?
note: I am using the default North America General Purpose 2
settings in PhotoShop CS3, which references sRGB IEC61966-2.1 and
U.S. Web Coated (SWOP) v2.
example: r19 g61 b141 = c87 m57 y0 k45 in kuler and c100 m89
y13 k1 in PhotoShop.

HI, see if this discussion on Kuler and
color
management addresses your question.

PMS colors show as CMYK when using Device N

I have just upgraded to the CS3 Suite recently and am trying to send a PDF through the system using Device N. I use Quark Xpress 6.5 (haven't been able to talk the boss into converting to InDesign yet) and so when I have a project that uses PMS colors, of course I choose Device n when I create the PDF. When I send the PDF through, the PMS colors have separated into CMYK. I use the Creo Distiller Assistant that's supposed to help with color seps. We've got a computer to plate system so this really creates havoc with our impositioner. This version is Acrobat 8 Professional. I was using Acrobat 7 Pro and it worked fine with the Creo distiller assistant and all. Can someone tell me what's going on?

I checking the colors 1st in illustrator, than in indesign with separations preview (so far so good), and then in acrobat with output preview... and here is where it goes wrong... both for certified as well as uncertified.
I have now found the problem, but am unsure how to deal with it in the future (color management hell) : something to do with our synchronized profiles that basically say: adjust to match current color settings, placed content:keep existing assignments. I don't know how clear this is? If iI disable the profile so I can override the existing assignment (which must have originally been to preserve appearance rather than numbers) it all works out.
I suppose it is an internal agency issue as to what to do. The idea is too stick synchronised as to provide consistent color, but there all these hidden profiles stuck in files from who knows who, when or where.
If you can follow, and have any suggestions,?

How can I convert CMYK PDF file to Spot Color from a standard Spot Library?

Hi,
I have PDF file that is in CMYK colors. Can I use Adobe Pro X to convert the document to Spot Color from a established spot library like the PANTONE PC? Is there a plugin to do it?
Amit.

In method HMAC, you have towards the bottom
catch(Exception e) {}please change this to
catch(Exception e)
e.printStackTrace();
}Note that using the sun.* classes, including the sun.misc.BASE64Encoder class, requires elevated privileges (see http://forum.java.sun.com/thread.jspa?threadID=483223&messageID=2255882).
It is not difficult to write your own encoder/decoder class, or borrow one from someone else. Just google on "java base64 encoder".

How do I stop FH Mx from converting spot colors to cmyk on export to pdf

I have Freehand Mxa on my PC. I created a couple of rectangles and filled with two Pantone colors from my swatch pallet.
I exported to pdf and the spot colors converted to cymk. Shucks! How do I stop that?
(When I print directly to my Adobe Distiller print driver the spot colors are retained as they should in my pdf.)
In the Freehand export function there is a setup dialog box just below the "cancel" button. When that opens there is only a drop down button allowing conversion to cmyk and cmyk/rgb. So, I am guessing that is not where I can tell Freehand to leave my spots alone.
What am I doing wrong?
I was going to attach the small test file but the system did allow. Hope my description is enough to render a solution.
-Steve

The only thing you're doing wrong is using FH's PDF export. It creates PDF files that are adequate for viewing online or printing to composite inkjet printers, but it doesn't support spot colors.
There are many more reasons why you shouldn't use FH's PDF export for print work. See this technote for limitations of PDF export.
http://go.adobe.com/kb/ts_tn_13496_en-us
When you need to retain spot colors, print to a Postscript file and Distill.

PMS color changes to CMYK when file is closed and reopened

I got a .psb-document with a adjustmentlayer>solid color as a background. The color is a Pantone 354-C. When I save my document (CMYK), and then reopen it, I no longer get the Pantone color library but the default color picker box. I see no visible change in color though so I'm not sure if the color changes. If I click the color library button in my adjustment layer, it automatically pics the PMS color beneth the 354-C (that is 355 C) and I see a change in color. So I have to repick 354-C again.
Anyone knows what's going on here?

Spot Colors have no real connection to individual Layers in Photoshop (as of CS6).
If you want to use them you need to employ Spot Channels.
Edit: And your intended color is probably simply out of gamut for that color space.

Eyedropper tool - Makes color RGB from CMYK image.

I made an image CMYK in photostop, and then placed it in an indesign file. When I used the eyedropper tool to grab a color from that graphic, the eyedropper tool made that color RGB. Our printer only accepts CMYK. So, I am a bit confused. How can I fix this? Or will this be a non-issue?
Thanks

I can think of three possibilities for what happened.
If the image is missing (check the links panel) the eydropper is sampling the RGB screen preview.
If you pasted the image from Photoshop instead of Placing it, you only pasted the low resolution RGB screen preview, and you have more problems than the eyedropper color.
If you opened the color picker by double-clicking on the color box, then said OK while the cursor was in one of the RGB fields (the default state), the color was converted from CMYK to RGB.
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Determine closest PMS color from CMYK values?

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