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color
color
luminance
Function luminance
luminance
(
c
:
color
.
Color
)
:
number
Relative luminance in [0, 1] (Rec. 709 weights, on linear light).
Parameters
c
:
color
.
Color
Returns
number
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Relative luminance in [0, 1] (Rec. 709 weights, on linear light).