The component of a color signal in television or digital imaging that carries information about hue and saturation, separate from brightness.
From 'chroma' (color) plus '-ance' (a noun-forming suffix); a technical term created in the mid-20th century for color television signal components.
When color TV was invented, engineers had to split colors into separate signals—chrominance lets your TV send color information separately from brightness, which is why you can watch old black-and-white broadcasts.
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