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  2. Blockchain - Wikipedia

    en.wikipedia.org/wiki/Blockchain

    Orphan blocks (purple) exist outside of the main chain. A blockchain is a decentralized , distributed , and often public, digital ledger consisting of records called blocks that are used to record transactions across many computers so that any involved block cannot be altered retroactively, without the alteration of all subsequent blocks.

  3. Help:Using colours - Wikipedia

    en.wikipedia.org/wiki/Help:Using_colours

    The method used for selecting the colours for various top-level pages, e.g. Main Page, Community Portal, Contents, and Help:Contents. The 3 colours are generated using the HSV colour space, then translated into RGB. Hue. Saturation 4% Brightness 100% main background. Saturation 10% Brightness 100% 2nd header, accent colour.

  4. Code Purple - Wikipedia

    en.wikipedia.org/wiki/Code_Purple

    Code Purple can mean: the US Environmental Protection Agency code for an air quality index between 201 and 300. a hospital emergency code. The US codename for the Japanese Type B Cipher Machine. Category: Disambiguation pages.

  5. Color - Wikipedia

    en.wikipedia.org/wiki/Color

    Color. Color (American English) or colour (British and Commonwealth English) is the visual perception based on the electromagnetic spectrum. Though color is not an inherent property of matter, color perception is related to an object's light absorption, reflection, emission spectra, and interference. For most humans, colors are perceived in the ...

  6. List of RAL colours - Wikipedia

    en.wikipedia.org/wiki/List_of_RAL_colours

    Green beige. RAL 1001. Beige. RAL 1002. Sand yellow. Vehicles of the Afrika Korps 1941–1943. RAL 1003. Signal yellow. Latvian Pasažieru vilciens (Vivi) train main livery colour.

  7. Magic (cryptography) - Wikipedia

    en.wikipedia.org/wiki/Magic_(cryptography)

    PURPLE, like Enigma, began its communications with the same line of code but then became an unfathomable jumble. Codebreakers tried to break PURPLE communiques by hand but found they could not. Then the codebreakers realized that it was not a manual additive or substitution code like RED and BLUE, but a machine-generated code similar to Germany ...

  8. RGB color model - Wikipedia

    en.wikipedia.org/wiki/RGB_color_model

    The RGB color model is an additive color model [1] in which the red, green and blue primary colors of light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue. [2]

  9. Web colors - Wikipedia

    en.wikipedia.org/wiki/Web_colors

    e. Web colors are colors used in displaying web pages on the World Wide Web; they can be described by way of three methods: a color may be specified as an RGB triplet, in hexadecimal format (a hex triplet) or according to its common English name in some cases. A color tool or other graphics software is often used to generate color values.