Indigo
Indigo
Indigo (/ˈɪndɪɡoʊ/; from Latin: indico) is a deep 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 blue and violet.
Etymology
The term "indigo" comes from the Latin indico, which translates to "Indian", as the dye was originally imported to Europe from India.
Related Terms
- Dye: A natural or synthetic substance used to add a color to or change the color of something.
- Color wheel: An abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc.
- RGB color space: An additive color model in which the red, green, and blue primary colors of light are added together in various ways to reproduce a broad array of colors.
- Ultramarine: A deep blue color pigment which was originally made by grinding lapis lazuli into a powder.
- Visible spectrum: The portion of the electromagnetic spectrum that is visible to the human eye.
- Rainbow: A meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky.
External links
- Medical encyclopedia article on Indigo
- Wikipedia's article - Indigo
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