How can I get darker skin?

I have black hair at the moment (planning to change soon) but it makes me look extremely pale and awful. It shows up all my spots more. I can't really wear foundation at the moment since I have eczema around my eyes and a flaky skin infection around my cheeks and chin, making the foundation look stupid. I can't tan naturally since I live up north and haven't seen the sun in what feels like forever. I don't want to use a sun bed either. How do I make my skin look better and possibly less pale?