Incredible Black And White Developing Light Source Kelvin Rating Ideas. Web the kelvin rating is the measure of the color temperature of a light source. The higher the kelvin rating, the cooler the light.
Web whether you need an ambient source of light or highly focused task lighting, consider the following kelvin ranges: A ‘cool’ light has a white or blue hue and a color temperature between 4,100k and 6,500k, which falls on the higher end of the kelvin scale and includes actual sunlight. Lower values like 2700k indicate warmer light, while higher values like 6500k indicate cooler light.
