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Shades of black
Shades of black are colors that differ only slightly from pure black. These colors have a low lightness. From photometric point of view, a color which differs slightly from black always has low relative luminance. Variations of black include what are commonly termed off-black colors, which may be considered part of a neutral color scheme, usually in interior design as a part of a background for brighter colors. Black and dark gray colors are powerful accent colors that suggest weight, dignity, formality, and solemnity.〔 Pile, John F. ''Interior Design'' Upper Saddle River, New Jersey:2007 Prentice-Hall Page 316 〕
In color theory, a ''shade'' is a pure color mixed with black. It decreases its lightness while nearly conserving its chromaticity. Strictly speaking, a “shade of black” is always a pure black itself and a “tint of black” would be a neutral gray. Unlike these, many off-black colors possess a hue and a colorfulness (also called saturation).
Colors often considered "shades of black" include ''onyx'', ''black olive'', ''charcoal'', and ''jet''; these colors and other variations of black are shown below.
==Black==
(詳細は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. A black visual stimulation will be void of hue and grayness. Black is the darkest possible color.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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