colour.colorimetry.luminance_CIE1976¶

colour.colorimetry.luminance_CIE1976(L_star, Y_n=100)[source]¶

Returns the luminance \(Y\) of given Lightness \(L^*\) with given reference white luminance \(Y_n\).

Parameters:	L_star (numeric or array_like) – Lightness \(L^\) Y_n* (numeric or array_like) – White reference luminance \(Y_n\).
Returns:	luminance \(Y\).
Return type:	numeric or array_like

Notes

Domain	Scale - Reference	Scale - 1
`L_star`	[0, 100]	[0, 1]

Range	Scale - Reference	Scale - 1
`Y`	[0, 100]	[0, 1]

References

[CIET14804f], [WS00c]

Examples

>>> luminance_CIE1976(41.527875844653451)  # doctest: +ELLIPSIS
12.1972253...
>>> luminance_CIE1976(41.527875844653451, 95)  # doctest: +ELLIPSIS
11.5873640...