_valid_value(`color`, `oklch(from oklch(0.7 0.45 30) l c 25deg / alpha)`, `oklch(0.7 0.45 25)`);
    test_valid_value(`color`, `oklch(from oklch(0.7 0.45 30) l c h / .25)`, `oklch(0.7 0.45 30 / 0.25)`);
    test_valid_value(`color`, `oklch(from oklch(0.7 0.45 30 / 40%) 0.25 c h / alpha)`, `oklch(0.25 0.45 30 / 0.4)`);
    test_valid_value(`color`, `oklch(from oklch(0.7 0.45 30 / 40%) l 0.25 h / alpha)`, `oklch(0.7 0.25 30 / 0.4)`);
    test_valid_value(`color`, `oklch(from oklch(0.7 0.45 30 / 40%) l c 0.25 