[lin robinson]

Hmm, interesting. I wonder if there are charts of changing hexadecimal numbers to get the sort of compliment that a color wheel gives for spectral colors.

Have you tried leaving, say the red digits the same, but switching the green and blue?

Changing, say, 336699 to 339966 ?
I hadn't realized that Web 2 came with a decor group. I was glad enough when you could start using the whole 16 million colors and not stick to those 3366CC things to be browser-proof.