AA-5 Desktop Color PrimerMany computer applications include dialog boxes in which you choose colors bymanipulating hue, saturation, and brightness. For example, some applications use acolor picker that can be reconfigured according to your preference (as shown in thefollowing figure).Additive and subtractive color systemsColor devices used in desktop publishing and printing simulate the range of visiblecolors using a set of primary colors that are combined to create other colors. There aretwo methods for creating a range of colors from a set of primary colors. Computermonitors and scanners are based on the additive color model. Printing technologies,including the Color Server and offset presses, are based on the subtractive colormodel.Additive (RGB) colorColor devices that use the additive color model create a range of colors by combiningvarying amounts of red, green, and blue light. These colors are called the additiveprimaries (shown in the following figure). White is created by adding the maximumamount of red, green, and blue light available. Black occurs wherever all three colorsare absent. Grays are created by adding equal amounts of all three color together.
