chroma
This term describes the perceived strength or saturation of a hue. It is a technical measure of how far a color has shifted away from a neutral gray; a high chroma indicates a vivid, saturated color, while a low chroma indicates a muted or dull tone. In the context of signal processing and digital imaging, it refers specifically to the color-carrying component of a video signal. This distinguishes the chromatic information from the luma, which handles the brightness and structural detail of the image.
Meanings
The purity or intensity of a color, representing the degree to which a color differs from a neutral gray of the same lightness.
"The artist adjusted the chroma of the pigment to create a more vivid sunset."
The component of a color signal that represents the color information, separate from the luminance or brightness information.
"In digital video compression, chroma subsampling is used to reduce the bandwidth required for the color signal."