8 Application functions8-4 CS193/CS173/CS1638.1.1 General information about colorEverybody has an idea of what hue an object has, for example,an apple is red, a lemon is yellow, and the sky is blue. Hue is thetint by which the color of an object is classified as red, yellow,blue, etc.Brightness is the degree of lightness in a color, as comparedwith another color, which makes it a light color or a dark color.For example, when comparing the yellow of a lemon and theyellow of a grapefruit, it is obvious that the yellow of the lemonis brighter. But what about when comparing the yellow of alemon and the red of a bean? Obviously, the yellow of the lemonis brighter. Brightness is this degree of lightness that enablescomparison regardless of the hue.What makes the difference between the yellow of a lemon andthe yellow of a pear? By saying that the lemon is a more vividyellow and the pear is a duller yellow, the difference betweenthe two colors is stated in terms of saturation, as opposed tobrightness. As opposed to hue and brightness, saturation is thecharacteristic that indicates the degree of vividness.
