Plus the sixteen CSS1 colors don't fit well on a color wheel (due to a low/overlapping set of saturation values):
I'm far from a designer, but I make web pages. For quite some time I've thought about the palette of "web colors". I'd like to be able to pick from those colors, when making simple web pages.
I've thought about this "color wheel" arrangement, i.e. when using image editors. It's a compact way to represent a whole range of colors. I was reminded of the combination of these things by a recent Hacker News comment thread.
So here it is: a color wheel, with only "web colors" on it. Each color is placed on the wheel, then grown to a polygon with a Voronoi diagram.
Hover colors to see their name (and preview swatch and hex code). Click one to "lock" it.