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OSA Color System

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OSA Color System (In French système chromatique) OSA color ordering system developed by the Optical Society of America in 1976; the color space structure of its 588 color samples follow the CIELAB system, which was passed at the same time. Lightness L from +5 (white) to –7 (black), redness-greenness g from +6 (red) to –10 (green), yellowness-blueness j from +11 (yellow) to –6 (blue); defined for D65 and 2°/10°.