I'd say espresso for a dark brown and I also love swiss chocolate and handwritten. NYX has a trio of neutral shades and all the shades in that one are cool toned. that one is called TS3 and has nude, taupe and dark brown. the dark brown shade is really pretty and a true medium toned brown shade. other matte browns i can think of are TS14 trio, with highlight, brown, and suade. that brown is also a very nice cool one. in Singles, NYX "chocolate", "mediterranean" are also cool toned matte brown shades.