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<html><body><h1>HSL Saturation</h1><p>The second parameter of hsl() defines the saturation. Less saturation mean less color. 0% is completely gray:</p><h2 style="background-color:hsl(0, 100%, 50%);">hsl(0, 100%, 50%)</h2><h2 style="background-color:hsl(0, 80%, 50%);">hsl(0, 80%, 50%)</h2><h2 style="background-color:hsl(0, 60%, 50%);">hsl(0, 60%, 50%)</h2><h2 style="background-color:hsl(0, 40%, 50%);">hsl(0, 40%, 50%)</h2><h2 style="background-color:hsl(0, 20%, 50%);">hsl(0, 20%, 50%)</h2><h2 style="background-color:hsl(0, 0%, 50%);">hsl(0, 0%, 50%)</h2></body></html>