I took a single hair of my head and I noticed that a quarter of the hair is dark reddish and the rest is a medium brown. Which is pretty unique I suppose.
It's my natural hair colour, in case you couldn't tell.
Naturally? It's kind of a chestnut/rosewood brown. I've got both blonde and red lights to it.
Currently? Plum from Strawberry Shortcake is the closest description. I had a very bright hot pink over the summer, and it refused to fade much. My hairdresser didn't want to pull bleach through the length of my hair, so I got a purple to overdye it. It's supposed to be lavender-violet shade on its own, but over the pink, it comes up as kind of an amethyst color with lots of highs and lows.
Hazelnut brown? At least that's what the hair color guide said when I compared mine to the dye colors... >v<
(I've never dyed my hair and don't intend to until it starts turning white ;v; )