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Many computer applications include dialog boxes in which you choose colors by 
manipulating hue, saturation, and brightness. For example, some applications use a 
color picker that can be reconfigured according to your preference (as shown in the 
following figure).

Color devices used in desktop publishing and printing simulate the range of visible 
colors using a set of primary colors that are combined to create other colors. There are 
two methods for creating a range of colors from a set of primary colors. Computer 
monitors and scanners are based on the 

. Printing technologies, 

including the Color Server and offset presses, are based on the 

Color devices that use the additive color model create a range of colors by combining 
varying amounts of red, green, and blue light. These colors are called the 

 (shown in the following figure). White is created by adding the maximum 

amount of red, green, and blue light available. Black occurs wherever all three colors 
are absent. Grays are created by adding equal amounts of all three color together.