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ISCC–NBS descriptor. Black. B: Normalized to [0–255] (byte) Black. #000000. Black is a color, the perception of which is evoked by the total absence of light that stimulates any of the three types of color sensitive cone cells in the human eye and with very low brightness compared to the surroundings.
Gray and black colors: Black: 000000: 0, 0, 0 DarkSlateGray: 2F4F4F: 47, 79, 79 DimGray: 696969: 105, 105, 105 SlateGray: 708090: 112, 128, 144 Gray: 808080: 128, 128, 128 LightSlateGray: 778899: 119, 136, 153 DarkGray: A9A9A9: 169, 169, 169 Silver: C0C0C0: 192, 192, 192 LightGray: D3D3D3: 211, 211, 211 Gainsboro: DCDCDC: 220, 220, 220
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.
Code black: bomb threat; Code blue: cardiac or respiratory arrest; Code brown: hazardous spill; Code green: evacuation; Code grey: system failure; Code orange: disaster or mass casualties; Code pink: pediatric emergency or obstetrical emergency; Code red: fire; Code white: aggression; Code yellow: missing patient; Code Silver: active shooter ...
HTML/CSS [1] B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred) Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without hue, like white and grey. [2] It is often used symbolically or figuratively to represent darkness. [3]
25-pair color code Pair no. Major color Minor color 1: White: Blue 2: Orange 3: Green 4: Brown 5: Slate 6: Red: Blue 7: Orange 8: Green 9: Brown 10: Slate 11: Black: Blue 12: Orange 13: Green 14: Brown 15: Slate 16: Yellow: Blue 17: Orange 18: Green 19: Brown 20: Slate 21: Violet: Blue 22: Orange 23: Green 24: Brown 25: Slate
RGB Color List. #FFCCCC. #FFC0C0. #FF9999. #FF8080. #FF6666. #FF4040. #FF3333. #FF0000.
The abbreviation CMYK refers to the four ink plates used: c yan, m agenta, y ellow, and k ey (black). The CMYK model works by partially or entirely masking colors on a lighter, usually white, background. The ink reduces the light that would otherwise be reflected.
Black and purple can be used to indicate special cases of danger, i.e. red color code, thus supporting information such as text (recommended color shown in table above) is also recommended. An example is the sequence black–red–yellow–green, used in triage tag in most part of the world.
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]