See the Pen <a href="https://codepen.io/firegroove/pen/mdgJOQm/91d30b460e0b44e5f7c4f3a9a6803709"> Cartesian Color Coordinate Spaces + cmy 2 + hsl (finally) WOW</a> by Firegroove (<a href="https://codepen.io/firegroove">@firegroove</a>) on <a href="https://codepen.io">CodePen</a>.
