27 Facts About Red

Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet.

Red pigment made from ochre was one of the first colors used in prehistoric art.

Red became a symbolic color of communism and socialism; Soviet Russia adopted a red flag following the Bolshevik Revolution in 1917, until the breakup of the Soviet Union in 1993.

Red light is used to help adapt night vision in low-light or night time, as the rod cells in the human eye are not sensitive to red.

Red lead, known as minium, has been used since the time of the ancient Greeks.

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Red meat gets its color from the iron found in the myoglobin and hemoglobin in the muscles and residual blood.

Red hair appears in people with two copies of a recessive gene on chromosome 16 which causes a mutation in the MC1R protein.

Red is associated with dominance in a number of animal species.

Red can affect the perception of dominance by others, leading to significant differences in mortality, reproductive success and parental investment between individuals displaying red and those not.

Red dye called Kermes was made beginning in the Neolithic Period by drying and then crushing the bodies of the females of a tiny scale insect in the genus Kermes, primarily Kermes vermilio.

Red was used to color statues and the skin of gladiators.

Red was the color associated with army; Roman soldiers wore red tunics, and officers wore a cloak called a paludamentum which, depending upon the quality of the dye, could be crimson, scarlet or purple.

Robert Gibb's 1881 painting, The Thin Red Line, depicting The Thin Red Line at the Battle of Balaclava, when a line of the Scottish Highland infantry repulsed a Russian cavalry charge.

Red is the traditional color of warning and danger, and is therefore often used on flags.

Red is the international color of stop signs and stop lights on highways and intersections.

Red stands out more clearly against a cool natural backdrop of blue sky, green trees or gray buildings.

Red is the color of a severe terrorist threat level in the United States, under the Homeland Security Advisory System.

Red is used in modern fashion much as it was used in Medieval painting; to attract the eyes of the viewer to the person who is supposed to be the center of attention.

Red was long seen as having a dark side, particularly in Christian theology.

Red'set music for "At the Devil's Ball", by Irving Berlin, United States, 1915.

Red lipstick has been worn by women as a cosmetic since ancient times.

Red Serge is the uniform of the Royal Canadian Mounted Police, created in 1873 as the North-West Mounted Police, and given its present name in 1920.

Red is the most common color found in national flags, found on the flags of 77 percent of the 210 countries listed as independent in 2016; far ahead of white; green (40 percent) and blue (37 percent).

Red flags are used to symbolize storms, bad water conditions, and many other dangers.

Red became the color of many social democratic parties in Europe, including the Labour Party in Britain; the Social Democratic Party of Germany (whose roots went back to 1863) and the French Socialist Party, which dated back under different names, to 1879.

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Red is used around the world by political parties of the left or center-left.

The Red Hat Society is a social group founded in 1998 for women 50 and over.