CRI

CRI

Short for Color Rendering Index. On a scale from 1 to 100, CRI measures how an artificial light source compares to natural white light, with 100 being essentially identical to natural day light.

In the days of incandescent light bulbs, CRI was not such an issue. With LEDs and advanced electronics, however, the light spectrum can vary quite a lot. The light from an LED can be very different from natural light.

This can have a dramatic impact on the colors you see. CRI is like the treble and bass on your stereo. You can turn a yellow banana blue with an LED. High CRI lighting makes colors appear more vivid and natural. There is also research that suggests that higher CRI has a positive impact on safety and productivity. The lowest quality LEDs may have a CRI of as little as 70.

For example, Atexor SLAM® luminaires use LEDs with a CRI of around 85.