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All 16 Crayola Heads 'n Tails crayon colors. The eight Heads 'n Tails Crayons are double-sided and encased in plastic tubes that function much like the ones on Crayola Twistables. Each crayon has two shades of color, for a total of 16 colors, which are approximated by the background colors and hex RGB values below.
Fluorescent-lamp formats. Fluorescent lamps in various embodiments. Since their introduction as a commercial product in 1939, many different types of fluorescent lamp have been introduced. Systematic nomenclature identifies mass-market lamps as to overall shape, power rating, length, color, and other electrical and illuminating characteristics.
Red (RGB), RGB red, or electric red[citation needed] (as opposed to pigment red, shown below) is the brightest possible red that can be reproduced on a computer monitor. This color is an approximation of an orangish red spectral color. It is one of the three primary colors of light in the RGB color model, along with green and blue.
Fluorescent lamp tubes are often straight and range in length from about 100 millimeters (3.9 in) for miniature lamps, to 2.43 meters (8.0 ft) for high-output lamps. Some lamps have a circular tube, used for table lamps or other places where a more compact light source is desired.
The list shows the color swatch and its name. Hovering over the color box shows the HSV, RGB, and #hex values for the color in the tool tip. All values and conversions are in the sRGB color space, which is an inappropriate assumption for some entries.
Standard illuminant. Relative spectral power distributions (SPDs) of CIE illuminants A, B, and C from 380 nm to 780 nm. A standard illuminant is a theoretical source of visible light with a spectral power distribution that is published. Standard illuminants provide a basis for comparing images or colors recorded under different lighting.
Chartreuse ( US: / ʃɑːrˈtruːz, - ˈtruːs / ⓘ, UK: /- ˈtrɜːz /, [ 1] French: [ʃaʁtʁøz] ⓘ ), also known as yellow-green or greenish yellow, is a color between yellow and green. [ 2] It was named because of its resemblance to the French liqueur green chartreuse, introduced in 1764. Similarly, chartreuse yellow is a yellow color ...
The Crayola crayon color radical red is displayed at right. The color radical red was formulated by Crayola in 1990. With a hue code of 348, this color is within the range of carmine colors. This color is supposed to be fluorescent, but there is no mechanism for displaying fluorescence on a computer screen.