what is the difference between violet and purple color
Purple Purple is a color intermediate between blue and red.[1][2] It is similar to violet, but unlike violet, which is a spectral color with its own wavelength on the visible spectrum of light, purple is a composite color made by combining red and blue.[3] According to surveys in Europe and the U.S., purple is the color most often associated with royalty, magic, mystery, and piety.[4] When combined with pink, it is associated with eroticism, femininity, and seduction.[5]
Rainbow Rainbows span a continuous spectrum of colours. Any distinct bands perceived are an artefact of human colour vision, and no banding of any type is seen in a black-and-white photo of a rainbow, only a smooth gradation of intensity to a maximum, then fading towards the other side. For colours seen by the human eye, the most commonly cited and remembered sequence is Newton's sevenfold red, orange, yellow, green, blue, indigo and violet,[2][3] remembered by the mnemonic, Richard Of York Gave Battle In Vain (ROYGBIV).
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Indigo Indigo is a deep and rich color close to the color wheel blue (a primary color in the RGB color space), as well as to some variants of ultramarine. It is traditionally regarded as a color in the visible spectrum, as well as one of the seven colors of the rainbow: the color between purple and blue; however, sources differ as to its actual position in the electromagnetic spectrum.