IIRC the CIEXYZ colorspace is useful when you want to interpolate between two colors without seeing intermediate colors that are weird, as you would with RGB, or that are unevenly spaced in perceived intensity, as you would with HSL.
IIRC the CIEXYZ colorspace is useful when you want to interpolate between two colors without seeing intermediate colors that are weird, as you would with RGB, or that are unevenly spaced in perceived intensity, as you would with HSL.