Color Rendering Index

Color Rendering Index (CRI) indicates a lamps ability to reproduce colors when compared to an ideal color source. A lower CRI means some distinctions between colors are lost. Higher CRI lamps provide more vibrant, vivid colors.

Color Temperature

The color temperature rating is another important factor to take into consideration when choosing a lighting solution. On the lower end of the scale, the color emitted tends to be more “warm” or orange. This temperature is useful in public places to promote relaxation. On the higher end of the scale are the “cool” white/blue colors, commonly found in offices to promote concentration.


A lumen is the unit for luminous flux, or the total amount of visible light emitted by a fixture. Not all light emitted from a fixture falls into the visible wavelength spectrum of the human eye. The lumen is an adjusted measure of “useful” light.