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How Illustrator uses the RGB model


    You can work with color values using the RGB color mode, which is based on the RGB color model. In RGB mode, each of the RGB components can use a value ranging from 0 (black) to 255 (white). For example, a bright red color might have an R value of 246, a G value of 20, and a B value of 50. When the values of all three components are equal, the result is a shade of gray. When the value of all components is 255, the result is pure white; when all components have values of 0, the result is pure black.

    Illustrator also includes a modified RGB color model called Web Safe RGB, which includes only those RGB colors that are appropriate for use on the Web.