Chrominance signal. The color part of a video signal, corresponding to the hue and saturation, but not to the brightness or luminance of the signal.

The white, gray and black signal has no chrominance, but a color signal has both signals, luminance and chrominance.

Video signals can be encoded in several ways, chrominance and luminance processed together or separately. The video systems that handle this signal are composite, components and Y / C