Indigo Totally Explained

Everything about Indigo totally explained

Indigo is the color on the electromagnetic spectrum between about 420 and 450 nm in wavelength, placing it between blue and violet. Color scientists don't usually recognize indigo as a significant color category, and generally classify wavelengths shorter than about 450 nm as violet.
Indigo and violet are different from purple, which can't be seen on the electromagnetic spectrum but can be achieved by mixing mostly blue and part red light.
One can see spectral indigo by looking at the reflection of a fluorescent tube in a non-recordable compact disc. This works because the CD functions as a diffraction grating, and a fluorescent lamp generally has a peak at 435.833 nm (from mercury), as is visible on the fluorescent lamp spectrum.

Distinction between four shades of indigo

Like many other colors (orange and violet are the best-known), indigo gets its name from an object in the natural world—the plant named indigo once used for dyeing cloth (see also Indigo dye).
   The color electric indigo is an approximation of spectrum indigo. This is the brightest color indigo that can be approximated on a computer screen—it is the color between the web color blue and the color electric violet.
   The web color blue violet or deep indigo is a shade of indigo brighter than pigment indigo but not as bright as electric indigo.
   The color pigment indigo is equivalent to the web color indigo and approximates the color indigo that's usually reproduced in pigments and colored pencils.
   The color of indigo dye is a different color than either spectrum indigo or pigment indigo. This is the actual color of the dye from the indigo plant when swatched onto raw fabric. A vat full of this dye is a darker color, approximating the web color Midnight Blue.
   When specifying the color indigo, it's necessary to indicate which particular one of these four major shades of indigo you're referring to.

Electric indigo

New Age Philosophy

The color electric indigo is used to symbolically represent the sixth chakra (called Ajna), which is said to include the third eye. This chakra is believed to be related to intuition and gnosis (spiritual knowledge). Parapsychology
Psychics who claim to be able to observe the aura with their third eye generally associate indigo, in auras, with an interest in religion or with intense spirituality and intuition. Indigo children are said to have predominantly indigo auras. People with indigo auras are said to be in occupations such as computer analyst, animal caretaker, and counselor. Sociology
Indigo was the color worn by the Dalits (Untouchables) in India before their pariah status was made illegal. If those of the higher castes touched any indigo object, they'd to perform a ritual expiation.

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