And sample UI gives you a dynamic chart and some generic app ui examples.

In addition to perceptual lightness there are a few other things you can view. The most ambitious (and experimental) of which is the colour plot.

You can drag the input swatches around to reorder them. Or click on them to adjust their colours in a colour picker, or quickly delete one.

I imagine you'll find a lot that it doesn't handle, but it should manage comma or space delimiting (but not both at once), with or without quotes and #'s and even full CSS vars.

Like it's inspiration, it will interpolate between any number of colours, the main difference being you can now choose your colour space rather than always using LAB. This gives you some options to choose from and can steer you around some of the desaturated colours you might get in one space.

New Year, New Colour Tool
for you data visualizers and maybe the odd designer

obumbratta.com/colour