Varieties of the color green may differ in hue, chroma (also called saturation or intensity) or lightness (or value, tone, or brightness), or in two or three of these qualities. Variations in value are also called tints and shades, a tint being a green or other hue mixed with white, a shade being mixed with black. Forest green has red, green, blue as 34%, 139%, 34%.

The color army green has been used in militaries since at least World War II, and probably before, though the precise tint varies considerably between and within different nations. Army green has red, green, blue as 78%, 83%, 32% and is a somewhat darker shade.