In color printing, the shade of cyan called process cyan or pigment cyan is one of the three primary pigment colors which, along with yellow and magenta, constitute the three subtractive primary colors of pigment. (The secondary colors of pigment are blue, green and red.) As such, the CMYK printing process was invented in the 1890s, when newspapers began to publish color comic strips.
Process cyan is not an RGB color, and there is no fixed conversion from CMYK primaries to RGB. Different formulations are used for printer's ink, so there can be variations in the printed color that is pure cyan ink. A typical formulation of process cyan is shown in the color box at right. The source of the color shown at right is the color cyan that is shown in the diagram located at the bottom of the tintbooks for CMYK printing.[2]
The web color cyan (aqua)
Cyan (additive secondary)
Red, green and blue lights, representing the three basic additive primary colors of the RGB color system, red, green, and blue. Cyan light is composed of equal amounts of green and blue light.
The web color cyan, shown at the right, is one of the three secondary colors in the RGB color model, used for creating all colors on a computer or television display by mixing various combinations of red, green and blue light. The X11 name for this color is cyan; the HTML name for the same color is aqua. They are both composed of the same mixture of blue and green light, and are exactly the same color.
In an artistic context, this color could also be called azure mist or cyan mist.[citation needed] Despite its name, this color is a lighter shade of cyan rather than a shade of azure.
Bleu celeste ("sky blue") is a rarely occurring tincture in heraldry (not being one of the seven main colors or metals or the three "staynard colors"). This tincture is sometimes also called ciel or simply celeste. It is depicted in a lighter shade than the range of shades of the more traditional tincture azure, which is the standard blue used in heraldry.[4] It has been used rarely since the 17th century,[5] gaining popularity after the First World War.
Charleston green is an extremely dark shade of cyan. The name Charleston green originated after the American Civil War, approximately 1865, when during Reconstruction, it was widely used to paint homes in Charleston, South Carolina.
It was formulated by Crayola in 1994 as part of their Gem Tones range of crayons. It is a slightly dark shade of cyan that is reminiscent of the bluish-green glow of some moonstones.
The color peacock blue is a deep greenish blue, from the iridescent color of a peacock. As a color between blue and cyan, peacock blue has been used as the process-blue ink in four-color printing.[14]
Kelly Moore Paint's "color of the year" for 2019 was their peacock blue.[15]
Displayed at right is the color medium sky blue.[citation needed] This is the color that is called sky blue in Crayola crayons. This color was formulated by Crayola in 1958. "Sky blue" appears in the 32, 48, 64, 96 and 120 packs of crayons.
Tiffany Blue is the colloquial name for the light medium robin egg bluecolor associated with Tiffany & Co., the New York Cityjewelrycompany. The color was used on the cover of Tiffany's Blue Book, first published in 1845.[20] Since then Tiffany & Co. has used the color extensively on promotional materials, including boxes and bags. The Tiffany Blue color is protected as a color trademark by Tiffany & Co. in some jurisdictions including the U.S.[21][22]
At right is displayed the X11 color named turquoise.
Turquoise is the name of a greenish blue color, based on the gem of the same name. The word turquoise comes from the French for Turkish, as the gem was originally imported from Turkey.[23][24]
The first recorded use of turquoise as a color name in English was in 1573.[25] Perhaps owing to sharing its name with a mineral, turquoise is currently a more common term in English than other cyan-like colors.[26]
Verdigris is the common name for a greenpigment obtained through the application of acetic acid to copper plates[27] or the natural patina formed when copper, brass or bronze is weathered and exposed to air or seawater over a period of time. The name verdigris comes from the Middle Englishvertegrez, from the Old Frenchverte grez, an alteration of vert-de-Grèce ("green of Greece"). Used as a pigment in paintings and other art objects (as green color) since ancient Greece, it was originally made by hanging copper plates over hot vinegar in a sealed pot until a green crust formed on the copper. The vivid green color of copper(II) acetate made this form of verdigris a much used pigment. Until the 19th century, verdigris was the most vibrant green pigment available and was frequently used in painting. Verdigris was sometimes used to illustrate cyan colors in early color wheels.[28]
^"Team Information"(PDF). 2017 Philadelphia Eagles Media Guide. NFL Enterprises, LLC. September 26, 2017. Archived from the original(PDF) on January 19, 2018. Retrieved November 29, 2020.
^Color sample #164 on the ISCC-NBS color list is that tone of myrtle green which matches the color sample of myrtle green in the 1930 book A Dictionary of Color by Maerz and Paul (see color sample of Myrtle Green on Page 85 Plate 31 Color Sample L1).
^Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 199; Color Sample of Myrtle Green: Page 85 Plate 31 Color Sample L1
^St. John, Eugene (February 1924). "Some Practical Hints on Presswork". The Inland Printer. 72 (5): 805. Retrieved 5 June 2021. While process yellow may be considered lemon yellow, process red, carmine lake, three-color process blue, Prussian blue, and four-color process blue, peacock blue, many variations are encountered in practice; ...
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