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In optics, violet is a spectral color (referring to the color of different single wavelengths of light), whereas purple is the color of various combinations of red and blue (or violet) light, [5] [6] some of which humans perceive as similar to violet. In common usage, both terms are used to refer to a variety of colors between blue and red in hue.
In American English, this color term is sometimes used in color theory as one of the purple colors—a non-spectral color between red and violet that is a deep version of a color on the line of purples on the CIE chromaticity diagram. [citation needed] In use by some artists red-violet is equivalent to purple.
The races in the Hippodrome used four teams: red, white, blue and green; and the supporters of these became political factions, taking sides on the great theological issues—which were also political questions—of Arianism, Nestorianism and Monophysitism, and therefore on the Imperial claimants who also took sides.
However, Mesopotamian mythology asserted that visible sky is a layer of lapis lazuli stone underlying Heaven, suggesting a sky-blue color for the stone. [35] The Sifrei says that counterfeit tekhelet was made from both "[red] dye and indigo", indicating that the overall color was purple.
The color Red was used in several applications by humans, which early on included use in calligraphy and writing beginning in 8th century China as a way to mark underlines and draw attention to portions of a script. [3] The color red also included a wide variety of different cultural means of the color red.
"Imperial Porphyry" from the Red Sea Mountains of Egypt A waterworn cobble of porphyry Rhyolite porphyry from Colorado; scale bar in lower left is 1 cm (0.39 in). Porphyry (/ ˈ p ɔːr f ə r i / POR-fə-ree) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate-rich, generally aphanitic matrix or groundmass.
In the Eastern Roman (Byzantine) Empire, the traditional Roman chariot-racing factions continued to play a prominent role in mass entertainment, religion and politics for several centuries. Supporters of the Blue teams vied with supporters of the Greens for control of foreign, domestic and religious policies, and Imperial subsidies for themselves.
By 1996, color schemes were relatively mixed, as CNN, CBS, ABC, and The New York Times referred to Democratic states with the color blue and Republican ones as red, while Time and The Washington Post used the opposite scheme. [17] [18] [19] NBC used the color blue for the incumbent party, which is why blue represented the Democrats in 2000.