Indigo or swallow

I need some help trying to identify this bird. I had thought it was a swallow but a friend said it was an Indigo Bunting but the beak doesn't look right. It was sitting on a gate valve at the Pond I have been trying to get shots of a red Necked Grebe. Salt Fork State Park in Ohio. There were several Bank Swallows flying around. I think it is a tree swallow but the color isn't right.

Tree Swallow

Thanks John, you helped settle an argument. The thing that was throwing me was the color I have never seen a vibrant blue like this on a tree swallow. Mostly a darker blue.

Ron