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  2. Tyrian purple - Wikipedia

    en.wikipedia.org/wiki/Tyrian_purple

    The Royal purple or Imperial purple was probably used until the time of Augustine of Hippo (354–430) and before the demise of the Roman Empire. Dye chemistry [ edit ] Variations in colours of "Tyrian purple" from different snails are related to the presence of indigo dye (blue), 6-bromoindigo (purple), and the red 6,6'-dibromoindigo.

  3. Shades of purple - Wikipedia

    en.wikipedia.org/wiki/Shades_of_purple

    Shades of purple. There are numerous variations of the color purple, a sampling of which is shown below. In common English usage, purple is a range of hues of color occurring between red and blue. [1] However, the meaning of the term purple is not well defined. There is confusion about the meaning of the terms purple and violet even among ...

  4. Color blindness - Wikipedia

    en.wikipedia.org/wiki/Color_blindness

    Persons with color blindness may be legally or practically barred from occupations in which color perception is an essential part of the job (e.g., mixing paint colors), or in which color perception is important for safety (e.g., operating vehicles in response to color-coded signals).

  5. Byzantium (color) - Wikipedia

    en.wikipedia.org/wiki/Byzantium_(color)

    Deep reddish purple. B: Normalized to [0–255] (byte) The color Byzantium is a particular dark tone of purple. It originates in modern times, and, despite its name, it should not be confused with Tyrian purple ( hue rendering ), the color historically used by Roman and Byzantine emperors. The latter, often also referred to as "Tyrian red", is ...

  6. Munsell color system - Wikipedia

    en.wikipedia.org/wiki/Munsell_color_system

    The Munsell color system, showing: a circle of hues at value 5 chroma 6; the neutral values from 0 to 10; and the chromas of purple-blue (5PB) at value 5. In colorimetry, the Munsell color system is a color space that specifies colors based on three properties of color: hue (basic color), value ( lightness ), and chroma (color intensity).

  7. Political colour - Wikipedia

    en.wikipedia.org/wiki/Political_colour

    In Canada, red is the colour of the Liberal Party of Canada. In China, red is the colour used by the Chinese Communist Party (CCP). In Hong Kong and Macau, red is used by the pro-Beijing camp. In Malaysia, red was currently used to represent Pakatan Harapan and also the Socialist Party of Malaysia.

  8. List of flags containing the color purple - Wikipedia

    en.wikipedia.org/wiki/List_of_flags_containing...

    Purple is one of the least used colors in vexillology and heraldry. Currently, the color appears in only four national flags: that of Dominica, Spain, El Salvador, and Nicaragua, and one co-official national flag, the Wiphala (co-official national flag of Bolivia ). However, it is also present in the flags of several administrative subdivisions ...

  9. Royal Purple (lubricant manufacturer) - Wikipedia

    en.wikipedia.org/wiki/Royal_Purple_(lubricant...

    royalpurple .com. Royal Purple is an American manufacturer which produces lubricants for automotive, industrial, marine, and racing use. [2] It is known primarily for its line of synthetic Royal Purple Motor Oil products used in gasoline and diesel engines. [3] [4] [5] They also produce other fluids including gear oil, transmission fluid, power ...