Amber (color)
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| Amber | ||
|---|---|---|
| — Color coordinates — | ||
| Hex triplet | #FFBF00 | |
| RGBa | (r, g, b) | (255, 191, 0) |
| HSV | (h, s, v) | (45°, 100%, 100%) |
| a: Normalized to [0–255] (byte) | ||
Amber is an orange-yellow color that got its name from the material known as amber. It is used in traffic lights and turn signals.
[edit] Usage and symbolism
Amber is a symbolic colour of energy and is also a colour worn by Hull City AFC, an English football team. VT220 computer terminals were also available in amber.
[edit] Formal definition
| UNECE Amber (desaturated approximation) | ||
|---|---|---|
| — Color coordinates — | ||
| Hex triplet | #FF7E00 | |
| RGBa | (r, g, b) | (255, 126, 0) |
| HSV | (h, s, v) | (30°, 100%, 100%) |
| a: Normalized to [0–255] (byte) | ||
In automotive lighting, UNECE Regulations state that direction-indicator lamps and standalone side-marker lamps and reflectors on vehicles must be amber. The color is defined in terms of the CIE 1931 color space as follows:
| Limit towards green |  |
| Limit towards red |  |
| Limit towards white |  |
The entirety of this definition lies outside the gamut of the sRGB color space — such a pure color cannot be represented using RGB primaries. The color swatch to the right is a desaturated approximation, created by taking the centroid of the standard definition and moving it towards the D65 white point, until it meets the sRGB gamut triangle.
[edit] References
- UNECE Regulation No. 6: Uniform Provisions Concerning the Approval of Direction Indicators for Motor Vehicles and their Trailers (E/ECE/324-E/ECE/TRANS/505/Rev.1/Add.5/Rev.3/Amend.2)[1][2]
- UNECE Regulation No. 48: Uniform Provisions Concerning the Approval of Vehicles with Regard to the Installation of Lighting and Light-Signalling Devices (E/ECE/324-E/ECE/TRANS/505/Rev.1/Add.47/Rev.3/Amend.2)
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