Orange (colour)

Orange
 
Clockwise, from top left: Delicate Arch, Utah; ISS astronauts wearing space suits; a Sadhu (pious man) in traditional Hindu attire, India; the Netherlands national football team; the Golden Gate Bridge; a Japanese maple tree.
Spectral coordinates
Wavelength590–620 nm
Frequency505–480 THz
About these coordinates     Colour coordinates
Hex triplet#FFA500
sRGBB (r, g, b)(255, 165, 0)
HSV (h, s, v)(39°, 100%, 100%)
CIELChuv (L, C, h)(75, 105, 45°)
SourceCSS Colour Module Level 3[1][2][3]
B: Normalized to [0–255] (byte)
H: Normalized to [0–100] (hundred)

Orange is the colour between yellow and red on the spectrum of visible light. The human eyes perceive orange when observing light with a dominant wavelength between roughly 585 and 620 nanometres. In traditional colour theory, it is a secondary colour of pigments, produced by mixing yellow and red. In the RGB colour model, it is a tertiary colour. It is named after the fruit of the same name.

The orange colour of many fruits and vegetables, such as carrots, pumpkins, sweet potatoes, and oranges, comes from carotenes, a type of photosynthetic pigment. These pigments convert the light energy that the plants absorb from the Sun into chemical energy for the plants' growth. Similarly, the hues of autumn leaves are from the same pigment after chlorophyll is removed.

In Europe and the United States, surveys show that orange is the colour most associated with amusement, the unconventional, extroversion, warmth, fire, energy, activity, danger, taste and aroma, the autumn and Allhallowtide seasons, as well as having long been the national colour of the Netherlands and the House of Orange. It also serves as the political colour of the Christian democracy political ideology and most Christian democratic political parties.[4] In Asia, it is an important symbolic colour in Buddhism and Hinduism.[5]

  1. ^ Çelik, Tantek; Lilley, Chris, eds. (18 January 2022). "CSS Color Module Level 3". W3C. Retrieved 10 September 2022.
  2. ^ "Orange / #FFA500 hex color". ColorHexa. 2022. Retrieved 10 September 2022.
  3. ^ "Orange / #FFA500Hex Color Code". Encycolorpedia. Retrieved 10 September 2022.
  4. ^ Cite error: The named reference Reuchamps2014 was invoked but never defined (see the help page).
  5. ^ Eva Heller, Psychologie de la couleur: effets et symboliques, pp. 149–158