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Color values in bold exist in 2-bit (four color) grayscale palette. Color values in very bold exist in 1-bit, monochrome palette. In 4-bit RGBI, dark colors have 2 ⁄ 3 rds intensity of the bright colors, not 1 ⁄ 2. Advanced color palettes 8-bit RGB (VGA)
In digital photography, computer-generated imagery, and colorimetry, a grayscale image is one in which the value of each pixel is a single sample representing only an amount of light; that is, it carries only intensity information. Grayscale images, a kind of black-and-white or gray monochrome, are composed exclusively of shades of gray.
Color gradient palettes. Palettes made of a continuous color gradient from darkest to lightest arbitrary hues. The pixel data is treated as if it were grayscale, but the color table plays with RGB color combinations, not only gray.
Variations of gray or grey include achromatic grayscale shades, which lie exactly between white and black, and nearby colors with low colorfulness. A selection of a number of these various colors is shown below.
With the NTSC format, a 128-color palette was available, built based on eight luma values and 15 combinations of I and Q chroma signals (plus I = Q = 0 for a pure grayscale): Hue 0
Special-purpose color spaces. The rg chromaticity space is used in computer vision applications, and shows the color of light (red, yellow, green, etc.), but not its intensity (dark, bright). LMS color space (long, medium, short), a perceptual color space based on the response functions of the cones in the retina of the eye.
All colors are available in text modes. In color modes (64×64, 128×64, 128×96, and 128×192) two four color palettes are available: a green border with the colors green, yellow, red, and blue; a white border with the colors white, cyan, magenta, and orange.
8-bit grayscale; 8-bit color; 15- or 16-bit color (high color) 24-bit color (true color) 30-, 36-, or 48-bit color (deep color) Related; Indexed color; Palette; RGB color model; Web-safe color
Color scheme. In color theory, a color scheme is a combination of 2 or more colors used in aesthetic or practical design. Aesthetic color schemes are used to create style and appeal. Colors that create a harmonious feeling when viewed together are often used together in aesthetic color schemes.
A monochrome or monochromatic image, object or palette is composed of one color (or values of one color). Images using only shades of grey are called grayscale (typically digital) or black-and-white (typically analog).
