Color

Colorimetry (American English) or Colourimetry (British English; see spelling differences) is "the science and technology used to quantify and describe physically the human color perception.

Color vision is the ability of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit.

Color psychology is the study of hues as a determinant of human behavior.

Black is the darkest color, the result of the absence or complete absorption of light.

Blue is the colour between violet and green on the optical spectrum of visible light.

Color blindness, also known as color vision deficiency, is the decreased ability to see color or differences in color.

Colorfulness, chroma, pure color and saturation are related but distinct concepts in colorimetry and color theory, referring to the perceived intensity of a specific color.

In color reproduction, including computer graphics and photography, the gamut, or color gamut /ˈɡæmət/, is a certain complete subset of colors.

Green is the color between blue and yellow on the spectrum of visible light.

Grey (British English) or gray (American English) is an intermediate color between black and white.

The language of flowers, sometimes called floriography, is a means of cryptological communication through the use or arrangement of flowers.

Magenta (/məˈdʒɛntə/) is variously defined as a purplish-red, reddish-purple, or a mauvish–crimson color.

Red is the color at the longer-wavelengths end of the spectrum of visible light next to orange, at the opposite end from violet.

Web colors are colors used in displaying web pages, and the methods for describing and specifying those colors.

White is an achromatic color, a color without hue.

The Purkinje effect (sometimes called the Purkinje shift or dark adaptation) is the tendency for the peak luminance sensitivity of the human eye to shift toward the blue end of the color spectrum at low illumination levels.

Color television is a television transmission technology that includes information on the color of the picture, so the video image can be displayed in color on the television set.

Monochrome describes paintings, drawings, design, or photographs in one color or values of one color.

Monochromacy (mono meaning one and chromo color) is among organisms or machine the ability to distinguish only one single frequency of the electromagnetic light spectrum.

Eye color or eye colour is a polygenic phenotypic character determined by two distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.

In digital imaging systems, color management is the controlled conversion between the color representations of various devices, such as image scanners, digital cameras, monitors, TV screens, film printers, computer printers, offset presses, and corresponding media.

Film colorization is any process that adds color to black-and-white, sepia, or other monochrome moving-picture images.

Color motion picture film refers both to unexposed color photographic film in a format suitable for use in a motion picture camera, and to finished motion picture film, ready for use in a projector, which bears images in color.

Dichromacy (di meaning "two" and chroma meaning "color") is the state of having two types of functioning color receptors, called cone cells, in the eyes.

Photo-degradation is the alteration of materials by light.

A colourant (British spelling) or colorant (American spelling) is something added to something else to cause a change in colour.

An international colour day (ICD) has been considered as appropriate since colour is, thanks to visual perception, one of the most influential phenomena in people’s lives and also one of the channels that contributes most greatly to the perception of reality.

A white point (often referred to as reference white or target white in technical documents) is a set of tristimulus values or chromaticity coordinates that serve to define the color "white" in image capture, encoding, or reproduction.

The colour centre is a region in the brain primarily responsible for visual perception and cortical processing of colour signals received by the eye, which ultimately results in colour vision.

Eigengrau (German: "intrinsic gray", lit. "own gray"; pronounced [ˈʔaɪ̯gn̩ˌgʁaʊ̯]), also called Eigenlicht ("intrinsic light"), dark light, or brain gray, is the uniform dark gray background that many people report seeing in the absence of light.

The first use of the term oxblood as a color name in the English language dates back to 1695–1705.

In color theory, a color scheme is the choice of colors used in design for a range of media.