rgb(255, 92, 255).
    test_valid_value(`color`, `hsl(from oklab(0 0.365 -0.16) h s l)`, `rgb(0, 0, 0)`); // Naive clip based mapping would give rgb(19, 0, 24).
    test_valid_value(`color`, `hsl(from oklch(1 0.399 336.3) h s l)`, `rgb(255, 255, 255)`); // Naive clip based mapping would give rgb(255, 91, 255).
    test_valid_value(`color`, `hsl(from oklch(0 0.399 336.3) h s l)`, `rgb(0, 0, 0)`); // Naive clip based mapping would give rgb(20, 0, 24).

    // Testing replacement with 0.
    test_valid_value(`