Generates a HslScalar value.
It seems Colorizr can't handle 'deg' units
Creates a HslScalar value from scalar (0..1) values
Converts a Hsl structure (or CSS string) to Colorizr's RGB format
Converts a Hsl value to scalar units, or parses a colour string and converts it.
Scales the opacity value of an input HSL value
Increases or decreases lightness by this percentage, returning new colour