Review Of Black Light Color Temperature Ideas. Cct is defined in degrees kelvin and correlated to the black body on the cie color diagram. So colour temperature is not exactly related to a wavelength, but to a distribution of wavelengths.

However, when heated at 1500 degrees kelvin, it will turn red. Cct is defined in degrees kelvin and correlated to the black body on the cie color diagram. Warm colors correspond to a lower cct value (2400k), while cooler or blueish light is associated with higher ct values (10,000k).