green

Green is a color in the visible spectrum, typically associated with wavelengths of about 495 to 570 nanometers. It is perceived when the eye’s middle-wavelength cone cells are stimulated. In color systems, green is handled differently: on electronic displays it is produced through additive light mixing (one of the three primary colors in RGB); in printing and painting it is created by subtractive methods, commonly via cyan and yellow inks or pigments.

In nature, green is widespread due to chlorophyll, the pigment that enables photosynthesis in plants and algae. The abundance of green in vegetation makes it a symbol of life, renewal, and ecological health.

Culturally, green carries varied meanings. It commonly connotes growth, fertility, safety, and permission, as in the green traffic signal. In modern discourse it is closely associated with environmentalism and conservation efforts, giving rise to terms like green politics and green technology.

Shades of green convey different effects in design and symbolism, ranging from vibrant lime to muted olive. The name is used for products, organizations, and places to evoke freshness, balance, or nature. In science and industry, phrases such as green chemistry and sustainable design describe practices intended to reduce environmental impact.

Some people have color vision deficiencies that affect the perception of green (for example, deuteranomaly), illustrating how color interpretation can vary across individuals.