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The name is a portmanteau of the acronym VANTA (vertically aligned nanotube arrays) [5] and black. The original Vantablack coating was grown from a chemical vapour deposition process (CVD) and is claimed to be the "world's darkest material" absorbing up to 99.965% of visible light measured perpendicular to the material.
Eigengrau is perceived as lighter than a black object in normal lighting conditions, because contrast is more important to the visual system than absolute brightness. [4] For example, the night sky looks darker than Eigengrau because of the contrast provided by the stars.
This moves the mixed color toward a neutral color—a gray or near-black. Lights are made brighter or dimmer by adjusting their brightness, i.e., energy level; in painting, lightness is adjusted through mixture with white, black, or a color's complement. The Color Triangle depicting tint, shade, and tone was proposed in 1937 by Faber Birren. [4]
Shades of black, or off-black colors, are colors that differ only slightly from pure black. These colors have a low lightness. From a photometric point of view, a color which differs slightly from black always has low relative luminance. Colors often considered "shades of black" include onyx, black olive, charcoal, and jet.
Black #000000 0 0 0 1903–present Yes Yes Yes Yes Yes Yes Charcoal Gray #736A62 115 106 98 1903–1910 Gray #8B8680 139 134 128 1926–present As "Middle Grey", part of the Munsell line, 1926–1944. Spelled "Grey" on labels, but "Gray" on boxes. Also called "Neutral Grey", 1930–1956. [2] No Yes Yes Yes Yes Yes Blue-Gray #C8C8CD 200 200
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A typical rich black mixture might be 100% black, 50% of each of the other three inks. Other percentages are used to achieve specific results, for example 100% black with 70% cyan (C), 35% magenta (M), and 40% yellow (Y) is used to achieve "cool" black.
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