I think cherry.
Does the color change significantly if you wet it? I can’t tell from the picture if it is more tan or pink.
Another option would be to build the box and let it sun for a week or two—and if it tans a store red it’s cherry.
Oops—looks like I posted right after you responded. I bought some “southern” hickory a few months ago and it is more tan, similar to ambrosia maple (this is the best picture I have since the lumber is buried right now).