[zefei]

This is an old article, and so wrong and vague in so many aspects of digital colors. It contains not much more than simple device-dependent RGB/HSV colors.

To use colors correctly (not many programmers can do this, in fact Chrome/Firefox/Safari don't show the same color for same RGB value on my machine), programmer needs to consider color profiles, gamma correction, white point etc. The sad truth is that RGB is mostly misunderstood from intuition, and most graphic libraries don't deal with device-dependencies at all. Luckily, most engineers don't have to deal with colors outside sRGB.

The absolute best place to read about digital colors (or image processing in general) is efg's references: http://www.efg2.com/Lab/Library/Color/Science.htm. It contains overwhelmingly large amount of info, but they are good info and quite essential for professional work.

[acjohnson55]

I wish I could really upvote this as a disclaimer. I once worked in a color science lab of a printing company, and it took a long time for me to really get a grip on the topic, because it is a deep topic. It's a bit disheartening to see something passed on as truth that's got so many inaccuracies.