pha)`, `rgb(153, 94, 51)`);
    test_valid_value(`color`, `hsl(from rebeccapurple h 20% l / alpha)`, `rgb(102, 82, 122)`);
    test_valid_value(`color`, `hsl(from rebeccapurple h s 20% / alpha)`, `rgb(51, 25, 77)`);
    test_valid_value(`color`, `hsl(from rebeccapurple h s l / .25)`, `rgba(102, 51, 153, 0.25)`);
    test_valid_value(`color`, `hsl(from rgb(20%, 40%, 60%, 80%) 25 s l / alpha)`, `rgba(153, 94, 51, 0.8)`);
    test_valid_value(`color`, `hsl(from rgb(20%, 40%, 60%, 80%) 25deg s l / alpha)`, `rgb