Illuminant D65 is a standard illuminant that represents average daylight conditions. It is defined by the International Commission on Illumination (CIE) and is part of the series of D illuminants, which are considered to represent the chromaticity of daylight at various times throughout the day. D65 has a correlated color temperature (CCT) of approximately 6500 Kelvin, which is close to midday sunlight on a clear day.
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