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The connection between the visible spectrum and color vision was explored by Thomas Young and Hermann von Helmholtz in the early 19th century. Their theory of color vision correctly proposed that the eye uses three distinct receptors to perceive color.
Orchid is a bright rich purple color that resembles the color which various orchids often exhibit. Various tones of orchid may range from grayish purple to purplish-pink to strong reddish purple. The first recorded use of orchid as a color name in English was in 1915. [1] In 1987, orchid was included as one of the X11 colors.
Aqua (Latin for "water") is a variation of the color cyan. The normalized color coordinates for the two web colors named aqua and cyan are identical. It was one of the three secondary colors of the RGB color model used on computer and television displays. In the HSV color wheel aqua is precisely halfway between blue and green.
Below is a chart showing the computer web color grays. 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.
The color wild watermelon is displayed at right.. Ultra red is a color formulated by Crayola in 1972. In 1990, the name of the color was changed to wild watermelon.. With a hue code of 350, this color is within the range of carmine colors.
This is a partial list of awareness ribbons.The meaning behind an awareness ribbon depends on its colors and pattern. Since many advocacy groups have adopted ribbons as symbols of support or awareness, ribbons, particularly those of a single color, some colors may refer to more than one cause.
To use a colour in a template or table you can use the hex triplet (e.g. bronze is #CD7F32) or HTML color names (e.g. red). Editors are encouraged to make use of Brewer palettes for charts, maps, and other entities, using this tool .
Displayed in the adjacent table is the color rich maroon, i.e. maroon as defined in the X11 color names, which is much brighter and more toned toward rose than the HTML/CSS maroon shown above. See the chart Color name clashes in the X11 color names article to see those colors that are different in HTML/CSS and X11.