I think in some breeds she'd be simply a tri-colour. White, black (with shadings) and a bit of brown. When you have a mix and don't know the components it's hard to say. Breeds call their colours, which may appear to be the same, different names. For instance Labs can be yellow but Golden Retrievers are called golden and they can be very much the same colour.
Pretty girl. Looks like she is happy to have her photo taken.