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Principal axes and cone-opponent contrasts of spherical distributions in the uniform color spaces.
| Color Space | RMS (s.d.) | Primary | Secondary | Primary RMS (s.d.) | Secondary RMS (s.d.) | |||
|---|---|---|---|---|---|---|---|---|
| L vs. M (Rel. Cont.) | S vs. LM (Rel. Cont.) | Luminance (Rel. Cont.) | Theta (degrees) | Phi (degrees) | Psi (degrees) | |||
| CIELAB Sphere | 41.95 | 27.42 | 38.73 | −25 | −0.5 | 89 | 50.56 | 47.10 |
| CIELuv Sphere | 28.32 | 20.77 | 38.73 | −26 | −0.8 | 89 | 39.45 | 39.56 |
| Munsell Sphere | 32.74 | 25.21 | 43.96 | −29 | −1.2 | 89 | 58.08 | 54.93 |
