luminance
nounUK /ˈluːmɪnəns/
US /ˈluːmɪnəns/
Luminance is how bright a light or color looks.
The luminance of the screen was too high, so she turned it down.
RELATED WORDS
OTHER MEANINGS
2. In science, the amount of light given off or reflected by a surface in a certain direction.
Scientists measured the luminance of the lamp to compare it with others.
3. In art and design, the lightness or darkness of a color.
The artist adjusted the luminance of the blue paint to make it stand out.
4. In video and photography, the brightness level of the picture signal.
Lowering the luminance made the video look darker and more dramatic.