Illuminant D65 is a standard illuminant used in color science and imaging. It represents average daylight with a correlated color temperature of approximately 6500 Kelvin. D65 is commonly used in various industries, including photography, printing, and television, to ensure consistent color reproduction. This illuminant is part of the CIE (International Commission on Illumination) standard illuminants, which help in color matching and calibration. By simulating natural daylight, D65 provides a reliable reference for evaluating colors under typical lighting conditions, making it essential for accurate color communication and quality control in visual media.