What does Colour volume mean?
Colour volume considers colour reproduction across brightness levels rather than describing only a two-dimensional gamut boundary. It helps distinguish the ability to show saturated colours at different luminances from a simple list of reachable colour coordinates.
Why it matters
A display may reproduce a strong colour at one brightness but not maintain the same saturation as it becomes much brighter. HDR presentation therefore depends on more than a wide-gamut badge. Tone mapping, panel capability and processing influence the visible result. The term should not be used as a substitute for measured performance or a promise that every source will look equally vivid.
A practical example
A bright red sign in an HDR scene may lose saturation or detail on one television while remaining more distinct on another. Comparing only a dim colour patch would not reveal the same limitation, which is why real scenes with varied brightness are useful.
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Related terminology: Colour temperature, Commercial quote.
For practical setup and troubleshooting, browse the journal or support guides.