UPDATE!

Since writing this post, I’ve learned that color calibration is a much more complicated beast than I originally thought. In fact, if you follow my advice here you may risk actually degrading the colors in your artwork! To the best of my knowledge, Gimp is perfectly capable of converting any color mistakes made by incorrectly applying a color profile. You should be able to use the options in the Image>>Mode menu. Still, I am incredibly sorry if I’ve mislead you and caused problems in your artwork. I will be researching this further and doing another post when I understand the matter better.

Original post:

As well as ensuring your monitor is well calibrated and displays accurate colors, one way to make sure your artwork  displays correctly across different monitors and mediums is to use color profile. Adobe RGB (1998) is one common standard, and it’s easy to setup in the Gimp. Peter Carey has a good tutorial here:

How to add ICC color profiles in Gimp

Apparently Adobe no longer distributes a Linux-specific profile on their website. To the best of my knowledge, the downloads are only different in name, so you can download either the Windows or Macintosh profiles and use them on Linux just fine.

They are available on this page (look in the lower-right corner).

Adobe – Downloads

I placed the .icc files inside a new folder I created in $HOME/.gimp-2.6/ Select them from Gimp>>Edit>>Preferences>>Color Management and you should be ready to go!

If you know more or know something that I missed, please let me know in the comments.