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Indian indigo dye lump.jpg
Piece o indigo plant dye frae Indie,
aboot 2.5 inches (6 cm) square.
Wavelength 450–420[1](disputit) nm
Common connotations
lyalty, releegion, spirituality, intuition
About these coordinates     Color coordinates
Hex triplet #4B0082
sRGBB    (r, g, b) (75, 0, 130)
CMYKH   (c, m, y, k) (42, 100, 0, 49)
HSV       (h, s, v) (275°, 100%, 51%)
Soorce HTML/CSS[2]
B: Normalised tae [0–255] (byte)
H: Normalised tae [0–100] (hunder)

Indigo is a colour that is tradeetionally regardit as a color on the veesible spectrum, as well as ane o the seven colours o the rainbow: the colour atween blue an violet. Altho tradeetionally considered ane o seven major spectral colors, its actual poseetion in the electromagnetic spectrum is controversial. Indigo is a deep an bricht colour close tae the colour wheel blue (a primary colour in the RGB color space), as well as tae some variants o ultramarine.

The color indigo wis named efter the indigo dye derived frae the plant Indigofera tinctoria an relatit species.

The first recordit uise o indigo as a color name in Inglis wis in 1289.[3]

References[eedit | eedit soorce]

  1. Encyclopedia of Physics—Google Book Result:
  2. W3C TR CSS3 Color Module, SVG color keywords. W3C. (May 2003). Retrieved on 14 December 2007.
  3. Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 197; Color Sample of Indigo: Page 117 Plate 47 Color Sample E10