Red is a color at the long wavelength end of the visible spectrum, with a wavelength of approximately 625–750 nanometres. Situated next to orange and opposite violet, it's a primary color in the RGB model and a secondary color in the CMYK model, complementary to cyan. Red's shades span from scarlet and vermillion to crimson, ranging from pale pink to dark burgundy.
In 1900 the Labour Party in the United Kingdom was founded and red became closely associated with the new labour movement.
In 1900, the Labour Party in Britain was founded and it chose red as its color.
In 1901, the Socialist Party of America was founded and chose red as its color.
In August 1914, at the outbreak of the First World War, the British Army discontinued the use of the red military uniform as a dress uniform.
Following the Bolshevik Revolution in 1917, Soviet Russia adopted a red flag.
In 1917, following the success of the Russian Revolution, red became the color of communist parties around the world.
In 1918, the Christian-Social People's Party in Liechtenstein was founded and were referred to as "Reds" for their social liberal leanings and party colors.
With the end of the German Empire in 1918, red, white, and black - the colors of the German Empire - came to be associated with German nationalism.
In 1919, the Communist Party USA was founded and it chose red as its color.
In 1920, the Chinese Communist Party was founded.
In 1920, the North-West Mounted Police was given its present name, the Royal Canadian Mounted Police. Their uniform is the Red Serge.
In 1927, Germany established red margin danger warning signs via Verordnung über Warnungstafeln für den Kraftfahrzeugverkehr.
In 1949, the Chinese Communist Party took power in China and its red flag and hammer and sickle emblem became the national symbols.
In 1960, the ruby laser, emitting in the red region of the spectrum, was invented.
In 1962, the red helium–neon laser was invented. It was then widely used in many scientific applications including holography, and in education. These lasers were also commercially used in LaserDisc players.
In 1968, national colors were mostly replaced in Formula One by commercial sponsor liveries. However, Ferrari always kept the traditional red color.
In 1968, red was standardized as the international color for stop signs and stop lights at the Vienna Convention on Road Signs and Signals.
In 1972, the Socialist Party of America was dissolved.
After the fall of the Soviet Union in 1991, Russia reverted to the pre-revolutionary blue, white, and red flag.
In 1994, Sweden joined the European Union. As a result, the ban on Allura Red AC was lifted in Sweden.
In 1998, The Red Hat Society was founded as a social group for women 50 and over.
Following the 2000 presidential election, the media began to use the terms "red states" and "blue states" to describe states that voted for Republican and Democratic candidates, respectively.
In 2000, at Pinnacle Point in South Africa, paleoanthropologists found evidence that Late Stone Age people were scraping and grinding ochre between 170,000 and 40,000 years ago, likely for body coloring.
In 2004, Georgia adopted a new white flag, which consists of four small and one big red cross in the middle touching all four sides.
On June 30, 2010, the Center for Science in the Public Interest (CSPI) called for the FDA to ban Red 40.
As of 2016, red is the most common color found in national flags, present on 77 percent of the 210 countries listed as independent.
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