Based on the limited view of the flooring it looks very similar to Walnut, due to dark center of the boards, and lighter tones along the edges. Here's an example of a recent floor that looks quite similar.
You could also create a similar look with a stain, but you won't get as much of the 2-tone effect. So depending on what you like about the floor, this could be an option as well. This is just one example of a Hickory floor with a stain.
Agoura Sash & Door, Inc.
Carlisle Wide Plank Floors