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  2. Hospital emergency codes - Wikipedia

    en.wikipedia.org/wiki/Hospital_emergency_codes

    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. Code brown: external emergency (disaster, mass casualties etc.) Code orange: evacuation.

  3. CMYK color model - Wikipedia

    en.wikipedia.org/wiki/CMYK_color_model

    The CMYK color model (also known as process color, or four color) is a subtractive color model, based on the CMY color model, used in color printing, and is also used to describe the printing process itself. The abbreviation CMYK refers to the four ink plates used: c yan, m agenta, y ellow, and k ey (black).

  4. 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.

  5. Handkerchief code - Wikipedia

    en.wikipedia.org/wiki/Handkerchief_code

    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 ...

  6. Shades of gray - Wikipedia

    en.wikipedia.org/wiki/Shades_of_gray

    An achromatic gray is a gray color in which the red, green, and blue codes are exactly equal. The web colors gray, gainsboro, light gray, dark gray, and dim gray are all achromatic colors. A chromatic gray is a gray color in which the red, green, and blue codes are not exactly equal, but are close to each other, which is what makes it a shade ...

  7. Nazi concentration camp badge - Wikipedia

    en.wikipedia.org/wiki/Nazi_concentration_camp_badge

    Nazi concentration camp badges, primarily triangles, were part of the system of identification in German camps. They were used in the concentration camps in the German-occupied countries to identify the reason the prisoners had been placed there. [1] The triangles were made of fabric and were sewn on jackets and trousers of the prisoners.

  8. Shades of red - Wikipedia

    en.wikipedia.org/wiki/Shades_of_red

    Crimson is a strong, bright, deep red color combined with some blue or violet, resulting in a small degree of purple. It is also the color between rose and red on the RGB color wheel and magenta and red on the RYB color wheel. Crimson as a quaternary color on the RGB color wheel. cerise. rose.

  9. Shades of blue - Wikipedia

    en.wikipedia.org/wiki/Shades_of_blue

    Blue (Crayola) is the color called blue in Crayola crayons. "Blue" was one of the original Crayola crayons formulated in 1903. Crayola can only be displayed approximately on a computer screen. In the 21st century, this hue is classified as a variation of azure that is on the border of blue .