What color hair do I have?

Móni

So I always thought that my hair was mousy brown/dirty blonde but the more I look at pictures and in the mirror idk if that's the right color.

In natural light the dark parts look more chestnut brown and the face framing pieces are more blonde.

But then in super bright light it almost looks red.

I've never dyed my hair. It does tend to get darker in the winter. What would you call this color?