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jeremyfriesen Yeah, they're acting as placeholders for variables, which don't actually exist until the color is parsed inside the function… I can't use $l, $c, $h because they don't exist at the point where users need to define how they are manipulated.
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jeremyfriesen Those represent the individual channels of an lch() color format. The same could be done with rgb() colors – where r, g, and b are the three channels