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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.
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 ...
Brown colors are dark or muted shades of reds, oranges, and yellows on the RGB and CMYK color schemes. In practice, browns are created by mixing two complementary colors from the RYB color scheme (combining all three primary colors). In theory, such combinations should produce black, but produce brown because most commercially available blue ...
The IALA recommends categorical color codes in 7 colors: red, orange, yellow, green, blue, white & black. Adding redundant coding of luminosity and colorfulness adds information and increases speed and accuracy of color decoding tasks. Color codes are superior to others (encoding to letters, shape, size, etc.) in certain types of tasks.
The minor, or secondary color is chosen from the sequence blue, orange, green, brown, and slate (mnemonic: Bell operators give better service.). 25-pair color coding using twisted pairs with solid color coding only, without tracers. This method was rarely used.
In 2019, an updated version was released under its original name of Metallic Crayons, adding eight more metallic colors for a total of 24. The original 16 colors are included in the special 152-count Ultimate Crayon Collection pack alongside 120 standard and 16 Crayons with Glitter. Four of the colors are included in the regular 96-count crayon ...
The first letter of the color code is matched by order of increasing magnitude. The electronic color codes, in order, are: 0 = Black; 1 = Brown; 2 = Red; 3 = Orange; 4 = Yellow; 5 = Green; 6 = Blue; 7 = Violet; 8 = Gray; 9 = White; Easy to remember. A mnemonic which includes color name(s) generally reduces the chances of confusing black and brown.
Shades of orange. In optics, orange has a wavelength between approximately 585 and 620 nm and a hue of 30° in HSV color space. In the RGB color space it is a secondary color numerically halfway between gamma-compressed red and yellow, as can be seen in the RGB color wheel. The complementary color of orange is azure.