This is the tone of orange that is a pure chroma on the HSV color wheel, the expression of which is known as the RGB color wheel, exactly halfway between red and yellow. The complementary color of orange is azure.
Safety orange (also known as blaze orange, and a number of other names) was defined in ANSI standard Z535.1–1998 and is commonly used in a wide variety of contexts to warn of hazards, including: high-viz clothing, road cones, and as the background color in safety warning notices.
A shade of orange known as International orange is used in the aerospace industry to set objects apart from their surroundings, similar to Safety orange, but deeper and with a more reddish tone. It was the color used for the Space Shuttle pressure suits.
The tone of international orange used to paint the Golden Gate Bridge in San Francisco, California is slightly lighter than the standard International orange used by military contractors and in engineering, thus increasing its visibility to ships. The 25 de Abril Bridge in Lisbon, Portugal also uses this color.
A discussion of the difference between the color orange (the color halfway between red and yellow, shown below as color wheel orange) and the color orange peel (the actual color of the outer skin of an orange), may be found in Maerz and Paul. Orange peel is the color halfway between orange (color wheel) and amber on the color wheel. The first recorded use of orange peel as a color name in English was in 1839.
The first recorded use of Princeton orange as a color name in English was in 1928. The color symbolizes Princeton University and is defined as Pantone 158. The equivalent RGB values vary among sources.
This shade of orange is unique to the University of Tennessee (UT), defined by the institution as Pantone 151, and is called UT orange. It is offered for sale by The Home Depot and licensed by the university. According to the university, this shade of orange is derived from the American daisy, which grew in profusion on the oldest part of the campus, The Hill. The University of Tennessee colors are UT orange and white, and are used across its various sports teams, advertising, and merchandise.
Spanish orange is the color that is called anaranjado (the Spanish word for the colour "orange") in the Guía de coloraciones (Guide to colorations) by Rosa Gallego and Juan Carlos Sanz, a color dictionary published in 2005 that is widely popular in the Hispanophone realm.
The Cucurbita upon which the color "pumpkin" is based. Pumpkin is a color that resembles pumpkins. The first recorded use of pumpkin as a color name in English was in 1922. Pumpkin or orange is used with black for Halloween decorations.
Persian orange is a color used in pottery and Persian carpets in Iran. The first recorded use of Persian orange as a color name in English was in 1892. Orange pudding (milk added to pureed oranges that is mixed in a blender with flour and slowly boiled on a stovetop) is colored Persian orange, assuming no food coloring is added. Allis-Chalmers tractors have been colored Persian orange since 1928 so that, even when caked with dirt, they could still be distinguished from landscape features.
Alloy orange is one of the colors in the special set of metallic Crayola crayons called Metallic FX, the colors of which were formulated by Crayola in 2001. Although this is supposed to be a metallic color, there is no mechanism for displaying metallic colors on a computer.
Burnt orange has been used as a color name for this medium dark shade of orange since 1915. This color is one variation that is used as a school color of The University of Texas at Austin, Auburn University, and Virginia Tech. Burnt orange is not a standard color; for example, it is defined differently by Auburn University and the University of Texas at Austin. The National Hockey League's San Jose Sharks use burnt orange as a secondary color, and it is one of three colors of the National Football League's Cleveland Browns. The Chicago Bears also use it as an alternate color. Burnt orange was used by the University of Montana prior to 1996 and Oklahoma State University for its football uniforms from 1973 through 1983. Burnt orange was popular in interior design in the 1970s. Burnt orange is also used to colour cylinders filled with the refrigerant R407C.
Brown, although an independent color term, actually combines the orange hue (or close to orange) with low brightness. It can be described as an especially dark orange or, in painters' terminology, a deep shade of orange. The first recorded use of brown as a color name in English was in about 1000 AD in the Metres of Boethius.