@culi The OKLrCH is interesting. It seems to give the least amount of banding when cycling through hues, at least in my eyes. I would think it would be really good for measuring distance. Well, with one transformation. I would use the hue (H) as a polar angle in cylindrical coordinates and C as the radius. Then convert to cartesian and measure distance. I don't know how I would actually implement this, but it's an idea

... I guess color space is like a double cone with extra pointy parts. I wonder how different this double cone would be from the RGB cube on its diagonal.

This is a cool video about computer color blending: https://www.youtube.com/watch?v=LKnqECcg6Gw

I'm not sure if it applies to the problems you're trying to solve with color distance. It's just generally related.

Codesandbox

If you have a github repo, you can automatically deploy to CodeSandbox.io to give a sandbox for your creations.

Here's an example I'm working on: https://codesandbox.io/s/github/paretoman/votekit

Embeds

Also, we might be able to embed examples here: https://codesandbox.io/docs/embedding

But that is something that would have to be specifically set up somehow on NodeBB, and I don't really know about that. For now, a link is good.