Acronym for hue-saturation-brightness. A color model in which hue is the color itself as placed on a color wheel, where 0[s] is red, 60[s] is yellow, 120[s] is green, 180[s] is cyan, 240[s] is blue, and 300[s] is magenta; saturation is the percentage of the specified hue in the color; and brightness is the percentage of white in the color. Also called: HLS, HSV, hue. See also color model. Compare CMY, RGB.