The color temperature determines how the human eye perceives white. The lower the color temperature a light source emits, the more yellow the light will be perceived and vice versa. A high color temperature gives what is called a cold light where the white appears very sharp and fits well where work is to be done. It is often heard that LED lights have a cold sterile feel. This is a myth, but may be true of early LEDs that existed several years ago. Today's quality diodes have a very comfortable color tone that corresponds to traditional lighting. However, you should be careful about budget lights and cheap LEDs as these tend to change color after a time of use. Make sure that the light does not change color temperature after 1000 hours of use. A good way to ensure a preserved color temperature may be to select a good quality LED. Which color temperature should be selected depends on the installation. In a home environment a warm white color temperature, 2500-3000K, is preferred as we are used to bulbs and halogen lamps. When it comes to lighting in public environments and retail premises, a natural white color tone, 3000-4000K, is preferable. This light accurately reflects colors and is therefore suitable as shop lighting for eg. clothing stores.