Comment by hatthew

15 hours ago

Hmm, the red definitely looks more vivid to me, but I'm not sure I would say it's lighter. In an HSL-type colorspace I would say it has more S, but not more L.

This is actually a very good point that nobody else has commented on. The very definition of lightness is somewhat ambiguous. I would argue that vividness itself is a unique axis, separate from saturation.

But which axis you care about is very context specific.