What is colour temperature?

Sunland’s LED Lighting offer lamps in warm, natural,pure and cool white with colour temperatures measured in Kelvin (K). The lower the colour temperature is, the warmer the light given by the LED:

Warm white = 2700K-3200K Natural white = 4000K-4500K Pure white = 5000K-5500K Cool white = 6000K-6500K