colour.COLOURSPACE_MODELS

colour.COLOURSPACE_MODELS = ('CAM02LCD', 'CAM02SCD', 'CAM02UCS', 'CAM16LCD', 'CAM16SCD', 'CAM16UCS', 'CIE 1931', 'CIE 1960 UCS', 'CIE 1976 UCS', 'CIE Lab', 'CIE Luv', 'CIE UCS', 'CIE UVW', 'CIE XYZ', 'CIE xyY', 'DIN99', 'HCL', 'HSL', 'HSV', 'Hunter Lab', 'Hunter Rdab', 'ICaCb', 'ICtCp', 'IHLS', 'IPT Ragoo 2021', 'IPT', 'IgPgTg', 'Jzazbz', 'OSA UCS', 'Oklab', 'RGB', 'YCbCr', 'YCoCg', 'Yrg', 'hdr-CIELAB', 'hdr-IPT')

Colourspace models supporting a direct conversion to CIE XYZ tristimulus values.