Green is a color seen commonly in nature. Many plants are green mostly on behalf of a complex chemical known as chlorophyll. The light of the sun that we see from Earth because of our atmosphere and other various reasons is tinted green.

Green light has a wavelength of roughly 520-570 nm and is one of the additive primary colors, the complement of magenta. Many artists, however, continue to use a traditional color theory in which the complement of green is considered to be red.

People who are red-green color blind can often distinguish between the two colors but confuse them with other colors, e.g., bright green with yellow; dark green with brown.