HCL color demos.
based on d3.hcl funcition https://github.com/d3/d3-color#hcl .
Constructs a new CIELChab color. The channel values are exposed as
l,candhproperties on the returned instance. Use the CIELChab color picker to explore this color space. The value oflis typically in the range[0, 100],cis typically in[0, 230], andhis typically in[0, 360).
Workflow https://github.com/Phlox-GL/phlox-workflow
MIT