Jisho

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Noun
1. primary colour; primary color
Noun
2. pure color; unmixed color; striking color
Noun
3. original color (of a painting, etc. as opposed to a reproduction)
Wikipedia definition
4. Primary colorPrimary colors are sets of colors that can be combined to make a useful range of colors. For human applications, three primary colors are usually used, since human color vision is trichromatic. For additive combination of colors, as in overlapping projected lights or in CRT displays, the primary colors normally used are red, green, and blue.
Read “Primary color” on English Wikipedia
Read “原色” on Japanese Wikipedia
Read “Primary color” on DBpedia

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