Green topic

Green is a color, the perception of which is evoked by light having a spectrum dominated by energy with a wavelength of roughly 520–570-nm. In the subtractive color system, it is not a primary color, but is created out of a mixture of yellow and blue, or yellow and cyan; it is considered one of the additive primary color. On the HSV color wheel, the complement of green is magenta; that is, a purple color corresponding to an equal mixture of red and blue light. On a color wheel based on... full article at wikipedia