Illuminant C is a standard illuminant defined by the International Commission on Illumination (CIE). It represents a specific type of daylight with a correlated color temperature of approximately 6500 Kelvin. This illuminant is often used in color science and photography to simulate natural daylight conditions. The purpose of Illuminant C is to provide a consistent reference for evaluating color appearance under daylight. It is particularly useful in industries such as printing, textiles, and digital imaging, where accurate color reproduction is essential. By using this standard, professionals can ensure that colors are perceived similarly across different devices and environments.