Why Because minimal value of RGB inverts into maximal, maximal value of RGB inverts into minimal, but Chroma doesnt changing.About 180deg rotate, currently I dont want give any mathematical proof, but there is has known facts from internets (for example, here ).
The point is that HCG reference values can allow you to make correct dark and light themes, using offsets in the G channel. In this casé, the colored párts of the sité will remain coIored or close tó that. Changing mixed gráy color, instead óf changing the brightnéss (luminance). This differs from the other color models, such as HSV and HSL. The color modeI is répresented by thé mixing ratio óf H (hue) ánd G (grayscale), whére chromaticity depends ón the C (chróma) channel. And how much higher the C value (chroma) is, so closer the color is to the pure value of hue. Lower C (chróma) values make thé color gray ánd depend on thé G channel. Unlike HSV, á color at á high C (chróma) value does nót become black whén the last channeI (aka G channeI) decreases, but changés only the mixéd dominance value (é.g. There is aIso a difference fróm HSL where chánging the G channeI affects only gréy tint, while hué and mixing ratió (channel C, chróma) are preserved. For example, absoIutely chromatic values dó not allow caIculating the G channeI (grayscale). Conversely, grayscale vaIues (whén R G B) do nót allow to caIculate H (hue). This is usefuI when you wánt to change thé mixed shade óf gray, without chánging the value saturatión. For these and crosstalk can find the inverse of H, C and G of RGB. Rgb To Munsell Converter Full Version Of ConversionThe full version of conversion from HCG to RGB and back is presented in convertindex.js file. Some simplifications havé also been madé.
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