colour.colorimetry.luminance_CIE1976

colour.colorimetry.luminance_CIE1976(Lstar, Y_n=100)

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

Parameters:

• Lstar (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

• Input Lightness \(L^*\) and reference white luminance \(Y_n\) are in domain [0, 100].
• Output luminance \(Y\) is in range [0, 100].

References

• [Lin03a]
• [WS00a]

Examples

>>> luminance_CIE1976(37.98562910)  
10.0800000...
>>> luminance_CIE1976(37.98562910, 95)  
9.5760000...