BASICS 15 of 19
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Color Rendering Index Color Rendering Index (CRI) of a lamp tells us how rich colors look under the lamp.

Two lamps may have the same Color Temperature but they can render colors differently. Daylight is assigned a CRI of 100 and lamps are assigned a CRI number to indicate how rich colors look.

Daylight
100 CRI
Best Fluorescent
85-90 CRI
Old T12 Fluorescent
62 CRI
HPS (Street Lights)
22 CRI
Halogen & Incandescent
100 CRI
   

 

With a low CRI lamp colors may look dull or washed out.

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