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', 'hdr-CIELAB', 'hdr-IPT', 'HSL', 'HSV', 'Hunter Lab', 'Hunter Rdab', 'ICaCb', 'ICtCp', 'IHLS', 'IPT Ragoo 2021', 'IPT', 'IgPgTg', 'Jzazbz', 'OSA UCS', 'Oklab', 'RGB', 'sUCS', 'YCbCr', 'YCoCg', 'Yrg')

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