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  2. School colors - Wikipedia

    en.wikipedia.org/wiki/School_colors

    Princeton University's store, featuring the school's orange and black colors. The tradition of school colors appears to have started in England in the 1830s. The University of Cambridge chose Cambridge blue for the Boat Race against the University of Oxford in 1836, [2] Westminster School have used pink as their color since a boat race against Eton School in 1837, [3] and Durham University ...

  3. Shades of violet - Wikipedia

    en.wikipedia.org/wiki/Shades_of_violet

    The tertiary color on the HSV color wheel (also known as the RGB color wheel) precisely halfway between blue and magenta is called color wheel violet.This tone of violet—an approximation of the color violet at about 417 nanometers as plotted on the CIE chromaticity diagram—is shown at right.

  4. List of Crayola crayon colors - Wikipedia

    en.wikipedia.org/wiki/List_of_Crayola_crayon_colors

    Color Name Hexadecimal in their website depiction [b] R G B Years in production [2] Notes 16-Box 24-Box 48-Box 64-Box 96-Box 120-Box Red #ED0A3F 237

  5. Color of chemicals - Wikipedia

    en.wikipedia.org/wiki/Color_of_chemicals

    This can only be used as a very rough guide, for instance if a narrow range of wavelengths within the band 647–700 nm is absorbed, then the blue and green receptors will be fully stimulated, making cyan, and the red receptor will be partially stimulated, diluting the cyan to a greyish hue.

  6. Ultramarine - Wikipedia

    en.wikipedia.org/wiki/Ultramarine

    Ultramarine is a deep blue color pigment which was originally made by grinding lapis lazuli into a powder. [2] Its lengthy grinding and washing process makes the natural pigment quite valuable—roughly ten times more expensive than the stone it comes from and as expensive as gold.

  7. Cobalt blue - Wikipedia

    en.wikipedia.org/wiki/Cobalt_blue

    Ores containing cobalt have been used since antiquity as pigments to give a blue color to porcelain and glass. Cobalt blue in impure forms had long been used in Chinese porcelain. [1] In 1742, Swedish chemist Georg Brandt showed that the blue color was due to a previously unidentified metal, cobalt. The first recorded use of cobalt blue as a ...

  8. Tekhelet - Wikipedia

    en.wikipedia.org/wiki/Tekhelet

    Lapis lazuli can vary between blue and purple-blue, and according to some sources the preferred shade of lapis lazuli in the Near East was purple-blue. [24] However, Mesopotamian mythology asserted that visible sky is a layer of lapis lazuli stone underlying Heaven, suggesting a sky-blue color for the stone. [35]

  9. Handkerchief code - Wikipedia

    en.wikipedia.org/wiki/Handkerchief_code

    For example, a dark blue handkerchief indicates an interest in anal sex, and wearing it in the left pocket indicates a preference for being the penetrating partner. The code was first used in the 1970s in the United States, Canada, Australia, and Europe, by gay and bisexual men seeking casual sex or BDSM practitioners.

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