What is K? Color Temperature and Kelvin

A basic unit of thermodynamic temperature (color temperature) used to measure the hue (color) of the light output. Hid lighting kits are generally offered in 6000K ? 9000K color ranges. The higher the Kelvin (K) of the kit, they bluer the light output is. Ideal driving ranger from an HID kit would be between 6000K and 8000K. This will closely replicate sunlight, the best driving conditions. Kits in the higher Kelvin range, 1000K +, are so blue that the light tends to scatter before hitting the road, leaving some lighting lost in the air. Although this adds a great look to the vehicle, it is not the most effective in the way of lighting.