Piece of indigo plant dye from India,
c. 2.5 inches (6.35 cm) square.
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*WAVELENGTH* –>
450 – 420 nm
(disputed)
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*’indigo’ is a ‘color’ that is traditionally regarded as a ‘color’ on the ‘visible spectrum’, as well as 1 of the 7 colors of the rainbow: the color between ‘blue’ + ‘violet’*
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Although traditionally considered one of seven major spectral colors, its actual position in the electromagnetic spectrum is controversial.
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Indigo is a deep and bright color close to the color wheel blue (a primary color in the RGB color space), as well as to some variants of ultramarine.
The color indigo was named after the indigo dye derived from the plant Indigofera tinctoria and related species.
The first known recorded use of indigo as a color name in English was in 1289
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A piece of indigo plant dye from India,
about 2.5 inches (6 cm) square
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| Wavelength | 450–420[1](disputed) nm |
|---|---|
| Common connotations | |
| loyalty, religion, spirituality, intuition, sorcery | |
| 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%) |
| Source | HTML/CSS[2] |
| B: Normalized to [0–255] (byte) H: Normalized to [0–100] (hundred) |
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