Color accuracy describes a lights ability to accurately reproduce colors. It is what separates a "good" light from a "bad" light, and is measured in several ways. CRI and TLCI have been the most used industry standards, but like brightness, are subject to manipulation by manufacturers.
Bi-color lights are typically more accurate at their lowest color temperature setting, and the difference can be significant. Manufacturers often do not disclose this difference, so a light may not be as accurate as it seems.
Click the question marks next to each measurement label to view more information.