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  2. Phthalocyanine Green G - Wikipedia

    en.wikipedia.org/wiki/Phthalocyanine_Green_G

    In practice, this pigment is a mixture of isomers and degrees of chlorination. The 15th and 16th chlorides are difficult to install. The chemical formula usually ranges from C 32 H 3 Cl 13 CuN 8 to C 32 HCl 15 CuN 8.

  3. Color space - Wikipedia

    en.wikipedia.org/wiki/Color_space

    A "color model" is an abstract mathematical model describing the way colors can be represented as tuples of numbers (e.g. triples in RGB or quadruples in CMYK); however, a color model with no associated mapping function to an absolute color space is a more or less arbitrary color system with no connection to any globally understood system of ...

  4. Brilliant blue FCF - Wikipedia

    en.wikipedia.org/wiki/Brilliant_blue_FCF

    The chemical formula is C 37 H 34 N 2 Na 2 O 9 S 3. Related dyes are C.I. acid green 3 (CAS#4680-78-8) and acid green 9 (CAS#4857-81-2). In these dyes, the 2-sulfonic acid group is replaced by H and Cl, respectively. [5] Many attempts have been made to find similarly colored natural dyes that are as stable as brilliant blue FCF.

  5. 6 Simple Steps For Finding Your Perfect Foundation Color

    www.aol.com/news/6-simple-steps-finding-perfect...

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  6. Munsell color system - Wikipedia

    en.wikipedia.org/wiki/Munsell_color_system

    In colorimetry, the Munsell color system is a color space that specifies colors based on three properties of color: hue (basic color), value , and chroma (color intensity). It was created by Albert H. Munsell in the first decade of the 20th century and adopted by the United States Department of Agriculture (USDA) as the official color system ...

  7. CIE 1931 color space - Wikipedia

    en.wikipedia.org/wiki/CIE_1931_color_space

    A comparison between a typical normalized M cone's spectral sensitivity and the CIE 1931 luminosity function for a standard observer in photopic vision. In the CIE 1931 model, Y is the luminance, Z is quasi-equal to blue (of CIE RGB), and X is a mix of the three CIE RGB curves chosen to be nonnegative (see § Definition of the CIE XYZ color space).

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