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Chapter 8. Color Management > How Color Works

How Color Works

In figuring out color management, I read all about how our eyes work and that's when I learned that we could see only three colors of light—red, green, and blue. Everything we see is a combination of those colors. That's right, when you look at a rainbow, all your eyes see are red, green, and blue (Figures 8.1 and 8.2). When we see all three of those colors in a balanced amount (equal amounts of red, green, and blue), we see white light. The more light there is, the brighter it is; the less light there is, the darker it is. We often call a low level of white light gray, so that's what I'll call a balanced amount of red, green, and blue. When they aren't balanced, we see color. Photoshop works the same way.

Figure 8.1. The color wheel.



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