Medium: Digital
Source: http://www.elegantthemes.com/blog/resources/four-quick-tips-for-improving-color-harmony-in-your-theme-customizations

Artist: Richard E. Adams
Title of work: unlisted
Year produced: 2006
Medium: Acrylic on canvas
Source of image: http://www.sito.org/cgi-bin/egads/showart?show=adr.0034

Saturation is the term for the amount of gray in a color. The top image, is a saturation scale from gray to the purest form of the color. The bottom image, though not the best example (it is really hard to find a piece using just saturation), shows how saturation can be used. In it, you’ll see many different saturations of green, in particular on the body of the stuffed cow and in the background. Saturation is just another use of color that can be used to add depth and interest.