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The HSL and HSV model-builders took an RGB cube – with constituent amounts of red, green, and blue light in a color denoted R, G, B ∈ [E] – and tilted it on its corner, so that black rested at the origin with white directly above it along the vertical axis, then measured the hue of the colors in the cube by their angle around that axis ...
English: HSV-RGB-comparison. Created with Inkscape. Succeeds en:Image:HSV_RGB_Comparison.png, and has the same license. A graphical representation of RGB coordinates given values for HSV. This equation () = shows origin of marked vertical axis values
Light colors", more formally known as additive colors, are formed by combining red, green, and blue light. This article refers to additive colors and refers to red, green, and blue as the primary colors. Hue is a term describing a pure color, that is, a color not modified by tinting or shading (see below). In additive colors, hues are formed by ...
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English: The RGB color space is often, for conceptual or computational convenience, represented with polar coordinates. Three possible such representations are shown here, along with their geometrical derivation from the RGB cube. For details, see the articles RGB color model and HSL and HSV.
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A channel in this context is the grayscale image of the same size as a color image, [citation needed] made of just one of these primary colors. For instance, an image from a standard digital camera will have a red, green and blue channel. A grayscale image has just one channel.
English: Several representations of RGB color space similar to HSL or HSV use the usual transformation from rectangular to polar coordinates to define their hue and chroma dimensions. This yields slightly different results than the hexagonal norm used by HSL and HSV themselves.