.CHC File Extension

File created by HCFR Colormeter (formerly ColorHCFR), a program used for calibrating the colors of projectors and computer monitors; saves color settings such as gamma, RGB levels, and temperature, as well as a standard CIE color diagram.

HCFR Colormeter doesn't actually change the display settings for your projector or monitor device. Instead, it provides an interface to test different color schemes. When you are happy with the color result, you can try to mimic the settings through the interace to your actual display device.