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  2. Shades of blue - Wikipedia

    en.wikipedia.org/wiki/Shades_of_blue

    The web color light blue is part of the X11 color system, with a hue code of 194. This color is closer to cyan than to blue. Variations of this color are known as sky blue, baby blue, or angel blue. The first recorded use of "light blue" as a color term in English is in the year 1915.

  3. Hospital emergency codes - Wikipedia

    en.wikipedia.org/wiki/Hospital_emergency_codes

    Standardised color codes Australia. Australian hospitals and other buildings are covered by Australian Standard 4083 (1997) Code black: security needed someone is armed and is a threat to themselves or others; Code grey: security needed, someone is unarmed, but is a threat to themselves or others; Code blue: life-threatening medical emergency

  4. Blue - Wikipedia

    en.wikipedia.org/wiki/Blue

    Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. [2] It lies between violet and cyan on the spectrum of visible light. The term blue generally describes colours perceived by humans observing light with a dominant wavelength that’s between approximately ...

  5. Web colors - Wikipedia

    en.wikipedia.org/wiki/Web_colors

    In some uses, hexadecimal color codes are specified with notation using a leading number sign (#). A color is specified according to the intensity of its red, green and blue components, each represented by eight bits. Thus, there are 24 bits used to specify a web color within the sRGB gamut, and 16,777,216 colors that may be so specified.

  6. Color code - Wikipedia

    en.wikipedia.org/wiki/Color_code

    The IALA recommends categorical color codes in 7 colors: red, orange, yellow, green, blue, white & black. [4] Adding redundant coding of luminosity and colorfulness adds information and increases speed and accuracy of color decoding tasks. [3]

  7. Lists of colors - Wikipedia

    en.wikipedia.org/wiki/Lists_of_colors

    These are the lists of colors ; List of colors: A–F. List of colors: G–M. List of colors: N–Z. List of colors (alphabetical) List of colors by shade. List of color palettes. List of Crayola crayon colors. List of RAL colours.

  8. Handkerchief code - Wikipedia

    en.wikipedia.org/wiki/Handkerchief_code

    v. t. e. The handkerchief code (also known as the hanky code, the bandana code, and flagging) [1] is a system of color-coded cloth handkerchief or bandanas for non-verbally communicating one's interests in sexual activities and fetishes. The color of the handkerchief identifies a particular activity, and the pocket it is worn in (left or right ...

  9. List of Crayola crayon colors - Wikipedia

    en.wikipedia.org/wiki/List_of_Crayola_crayon_colors

    All 16 Crayola Heads 'n Tails crayon colors. The eight Heads 'n Tails Crayons are double-sided and encased in plastic tubes that function much like the ones on Crayola Twistables. Each crayon has two shades of color, for a total of 16 colors, which are approximated by the background colors and hex RGB values below.

  10. X11 color names - Wikipedia

    en.wikipedia.org/wiki/X11_color_names

    In computing, on the X Window System, X11 color names are represented in a simple text file, which maps certain strings to RGB color values. It was traditionally shipped with every X11 installation, hence the name, and is usually located in <X11root> /lib/X11/rgb.txt. The web colors list is descended from it but differs for certain color names.

  11. Category:Shades of blue - Wikipedia

    en.wikipedia.org/wiki/Category:Shades_of_blue

    Cambridge Blue (colour) Capri (color) Carolina blue. Cerulean. Cobalt blue. Cobalt glass. Color of water. Columbia blue. Copper phthalocyanine.