Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–750 nanometers. It is a primary color in the RGB color model and a secondary color (made from magenta and yellow) in the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy.
AI overview
Red is a color of light at the long wavelength end of the visible spectrum, with wavelengths between 625 and 750 nanometers, and it appears opposite violet. It matters in color science and technology because it functions as a primary color in the RGB color model used by light-based devices and as a secondary color in the CMYK model used in printing.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Color.caption
- Clockwise, from top left: fresh strawberries; Northern cardinal; Magdalena Frąckowiak wearing a red dress at Paris Fashion Week; Honor guard of Chinese People's Liberation Army holding red flags; Cardinal Théodore-Adrien Sarr, Archbishop of Dakar.
- Color.hex
- FF0000
- Color.wavelength
- Approx. 625–740
- Color.frequency
- ~480–400
- Color.source
- X11
- Color.cmyk
- (0, 100, 100, 0)
- Color.c
- 0
- Color.m
- 100
- Color.y
- 100
- Color.k
- 0
- Color.title
- Red
via Wikipedia infobox
Wikidata facts
Article
40 sectionsContents
- Shades and variations
- In science and nature
- Seeing red
- In color theory and on a computer screen
- Color of sunset
- Lasers
- Astronomy
- Pigments and dyes
- Food coloring
- Autumn leaves
- Blood and other reds in nature
- Hair color
- In animal and human behavior
- History and art
- In prehistory and the ancient world
- The Middle Ages
- Renaissance
- Reds from the New World
- 18th to 20th century
- Symbolism
- Courage and sacrifice
- Hatred, anger, aggression, passion, heat and war
- Warning and danger
- The color that attracts attention
- Seduction, sexuality and sin
- In religion
- Military uses
- Red uniform
- In sports
- On flags
- In politics
- Socialism and communism
- United States
- Social and special interest groups
- Idioms
- See also
- References
- Notes and citations
- Bibliography
- External links
Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–750 nanometers. It is a primary color in the RGB color model and a secondary color (made from magenta and yellow) in the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy.
Red pigment made from ochre was one of the first colors used in prehistoric art. The Ancient Egyptians and Mayans colored their faces red in ceremonies; Roman generals had their bodies colored red to celebrate victories. It was also an important color in China, where it was used to color early pottery and later the gates and walls of palaces. In the Renaissance, the brilliant red costumes for the nobility and wealthy were dyed with kermes and cochineal. The 19th century brought the introduction of the first synthetic red dyes, which replaced the traditional dyes. Red became a symbolic color of communism and socialism; Soviet Russia adopted a red flag following the Bolshevik Revolution in 1917. The Soviet red banner would subsequently be used throughout the entire history of the Soviet Union. China adopted its own red flag following the Chinese Communist Revolution. A red flag was also adopted by North Vietnam in 1954, and by all of Vietnam in 1975.