| Input type | Output type |
| float, float, float | color |
The hsl function constructs a color from three floating-point values that specify the hue, saturation, and luminance of the color. The alpha (opacity) value of the color is set to 1.
The hue ranges from 0 to 6, where 0 is red, 1 is yellow, 2 is green, 3 is cyan, 4 is blue, 5 is purple, and 6 is red again.
The saturation and luminance range from 0 to 1. If the luminance is 0, the resulting color is always black. If it is 1, the resulting color is always white. Fully saturated colors are obtained when the saturation is set to 1 and the luminance is set to 0.5.
Examples:
hsl(0, 1, 0.5) ; red hsl(4, 1, 0.75) ; light blue hsl(0, 0, 0.5) ; gray hsl(0, 1, 1) ; white
See Also
rgb function
hsla function
Writing direct coloring
algorithms