Displayed at left is the web color orange red. It was formulated in 1987 as one of the X11 colors, which became known as the X11 web colors after the invention of the world wide web in 1991. Red-orange has been a Crayola color since 1949.

Vermilion is an opaque red pigment prepared from the mineral cinnabar, as well as the name of the resulting color. The pigment has been in use around the world for many thousands of years. The first recorded use of vermilion as a color name in English was in 1289. The first recorded use of cinnabar as a color name (the color name "cinnabar" is a synonym for vermilion) in English was in 1382. Most naturally produced vermilion comes from cinnabar mined in China, and vermilion is nowadays commonly called 'China red.' The name 'vermilion' is derived from the French vermeil (indicating any red dye), from Latin vermiculum, the ancient insect dye from Kermes vermilio. Words for red hues in Portuguese (vermelho) and Catalan (vermell) arose similarly. 'Cinnabar' and 'vermilion' were used interchangeably to describe either the natural or manufactured pigment until the 17th century when vermilion became the more common name. By the late 18th century 'cinnabar' applied to the unground natural mineral only.