| PASS | 'lab(50 50 none)' paints the same as 'lab(50 50 0)' | |
| PASS | 'lab(50 none 50)' paints the same as 'lab(50 0 50)' | |
| PASS | 'lab(none 50 50)' paints the same as 'lab(0 50 50)' | |
| PASS | 'oklab(0.5 0.1 none)' paints the same as 'oklab(0.5 0.1 0)' | |
| PASS | 'oklab(0.5 none 0.1)' paints the same as 'oklab(0.5 0 0.1)' | |
| PASS | 'lch(50 50 none)' paints the same as 'lch(50 50 0)' | |
| PASS | 'lch(50 none 180)' paints the same as 'lch(50 0 180)' | |
| PASS | 'oklch(0.7 0.15 none)' paints the same as 'oklch(0.7 0.15 0)' | |
| PASS | 'oklch(0.7 none 180)' paints the same as 'oklch(0.7 0 180)' | |
| PASS | 'color(display-p3 1 none 0)' paints the same as 'color(display-p3 1 0 0)' | |
| PASS | 'color(display-p3 none 1 0)' paints the same as 'color(display-p3 0 1 0)' | |
| PASS | 'color(rec2020 1 none 0)' paints the same as 'color(rec2020 1 0 0)' | |
| PASS | 'color(a98-rgb 1 none 0)' paints the same as 'color(a98-rgb 1 0 0)' | |
| PASS | 'color(prophoto-rgb 1 none 0)' paints the same as 'color(prophoto-rgb 1 0 0)' | |
| PASS | 'color(xyz 0.3 none 0.3)' paints the same as 'color(xyz 0.3 0 0.3)' | |
| PASS | 'color(srgb-linear 1 none 0)' paints the same as 'color(srgb-linear 1 0 0)' | |
| PASS | 'lab(50 50 50 / none)' paints the same as 'lab(50 50 50 / 0)' | |
| PASS | 'oklch(0.7 0.15 180 / none)' paints the same as 'oklch(0.7 0.15 180 / 0)' | |