colour.CCT_to_xy¶

colour.CCT_to_xy(CCT: FloatingOrArrayLike, method: Union[Literal['CIE Illuminant D Series', 'Kang 2002', 'Hernandez 1999', 'McCamy 1992'], str] = 'CIE Illuminant D Series') → numpy.ndarray[source]¶

Return the CIE xy chromaticity coordinates from given correlated colour temperature \(T_{cp}\) using given method.

Parameters

CCT (FloatingOrArrayLike) – Correlated colour temperature \(T_{cp}\).
method (Union[Literal['CIE Illuminant D Series', 'Kang 2002', 'Hernandez 1999', 'McCamy 1992'], str]) – Computation method.
optimisation_kwargs – {colour.temperature.CCT_to_xy_Hernandez1999(), colour.temperature.CCT_to_xy_McCamy1992()}, Parameters for scipy.optimize.minimize() definition.

Returns

CIE xy chromaticity coordinates.

Return type

numpy.ndarray

References

[HernandezAndresLR99], [KMH+02], [Wikipedia01a], [Wikipedia01b], [WS00d]

Examples

>>> CCT_to_xy(6504.38938305)  
array([ 0.3127077...,  0.3291128...])
>>> CCT_to_xy(6504.38938305, 'Kang 2002')
... 
array([ 0.313426 ...,  0.3235959...])

colour.XY_TO_CCT_METHODS

colour.CCT_TO_XY_METHODS