Color differentiation when exporting to PNG

Hello!
This is just driving me crazy and I'm dying to find a solution. Whenever I export my artboards to the PNG format, I receive a slight change in the bitmap colorization.
In Illustrator, my colors are perfect, but when exporting to PNG, the end result shows an increase in color vibrance - making a light blue (for example) show as slightly more turquoise/sharper light blue.
Example:
(This is a screenshot capture. Illustrator artboard is on the left hand side, the exported PNG example is on the right hand side.)
So, my question is if I am doing something wrong with my color settings?
My settings have been set in my Adobe Bridge to:
Europe General Purpose 3
RGB Space: sRGB IEC61966-2.1
CMYK Space: Coated FOGRA39 (ISO 12647-2:2004)
PS: I constantly switch between creating graphics that are used for the web and other on-screen web applications (such as GUI's) and printed booklets and posters, etc. I've always had immense trouble finding a perfect working space with web and printed material. If anyone has an advice for color settings or some kind of best-practice working environment to create consistent color, I would be very appreciative.
Thank you!

Chrome is not a color managed browser. From the several browsers I have installed on my pc only Firefox has color management capabilities that can match the color with the Adobe color managed programs.
You have to understand that there are color and non-color managed programs. Non-color managed programs always display the colors with the color space of your monitor. Take for example a color recorded in the file say, pure red R=255, G=0, B=0. The non-color managed program will send to your video card the same number and your monitor will display the most saturated red it is physically capable of. When a color managed program reads this value, first it checks the color space of the document, which can be defined with a color profile, a soft proofing color space, or when there is no color profile with the color settings set for the working space. Then it checks the color space of your monitor which is defined in your system and translates the values from the color space of the document to the color space of your monitor which can result in a different value other than 255, 0, 0 sent to your video card. In other words color management is simulating on your monitor a color space different than your monitor's color space. The result from this is different color displayed by color managed and non-color managed programs when reading the same file.
You can't make non-color managed programs to match a color managed programs, but you can make the color managed program match the non - color managed programs on your monitor by setting you document color space to the color space of your monitor. To do that from the Edit menu, choose Assign Profile and select the color profile of your monitor. This will match the color in Illustrator to the color displayed by the non-color managed programs. This in effect turns the color management off because the color management is translating between the same color spaces which results in zero difference.
However have in mind that this is not a very professional way of working with color and it only ensures a color consistency between color managed and non-color managed programs on your current monitor. What color you are actually creating that others will see or the color that will print is unpredictable with this setup.

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Marcin S wrote:
Thank you for you helpful replies. Now I know a little bit more about it. But still, this is not completely clear to me.
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Message was edited by: Michael Grenadier

Color differentiation when exporting to PNG

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