Shades of blue
Shades of blue
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Shades of blue

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Shades of blue

Varieties of the color blue may differ in hue, chroma (also called saturation, intensity, or colorfulness), or lightness (or value, tone, or brightness), or in two or three of these qualities. Variations in value are also called tints and shades, a tint being a blue or other hue mixed with white, a shade being mixed with black. A large selection of these colors is shown below.

The colour defined as blue in the RGB color model, X11 blue, is the most chromatic (colourful) blue that can be reproduced on a computer screen, and is the colour named blue in X11. It is one of the three primary colors used in the RGB colour space, along with red and green. The three additive primaries in the RGB colour system are the three colours of light chosen such as to provide the maximum gamut of colours that are capable of being represented on a computer or television set.

This colour is also called color wheel blue. It is at 240 degrees on the HSV/HSL colour wheel, also known as the RGB colour wheel. It is a spectral colour which lies at, or near, the short-wavelength end of the traditional "blue" and possibly was classified as "indigo" by Newton. Its complementary colour is yellow.

The color defined as blue in the CMYK color system used in printing, also known as pigment blue, is the tone of blue that is achieved by mixing process (printer's) cyan and process (printer's) magenta in equal proportions.

The purpose of the CMYK color system is to provide the maximum possible gamut of color reproducible in printing by the use of only three primaries.

The color indicated is only approximate as the colors of printing inks may vary.

Blue (Pantone) is the color that is called blue in Pantone.

The source of this color is the "Pantone Textile Paper eXtended (TPX)" color list, color # Blue C, EC, HC, M, PC, U, or UP—Blue.

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