Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, manufacturing, astrophysics and other fields. The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of comparable hue to that light source. The temperature is conventionally stated in units of absolute temperature, known as Kelvin (K).
Higher color temperatures (4600K or more) are called daylight colors which appear blue-white and are associated with vibrance and feeling alert.
Mid-range color temperatures (3100K–4600K) look cool white and are considered friendly and inviting.
Lower color temperatures (up to 3000K) are called warm white colors and range from red to yellowish-white in tone and evoke calming, warm and intimate feelings.