I think it would be fine without a border since it's already a good size. Your binding will make a nice "frame" for it.

If you wanted to, add a small border, then bind it with the same fabric.

I think the quilt is great without a border.I used to put borders on all my quilts and now I realize that alot of times it takes away from the quilt itself.You hear alot of quilters say"I need to make the quilt larger so I'll add another border "and that is what you see an added border to made the quilt larger NOT to enhance the look.Let your quilt speak to you...

I think I'd use a grey inner border to mimic the center then an aqua outer border half the size of one of the outer blocks and bind with that same aqua. Nice quilts.

I think a thin white border just to frame it would be lovely.

Very pretty! And yes to a border!

I would put a narrow border on them, probably a darker one. Wouldn't add that much to the size. Then finish it up.
Beautiful colors on both.

If it was me, I would go with a peach and coral.... bind it in aqua.

Depends on how big you want it. I think this would look fine with just a binding, because the squares have the look of a large border for the panel. But either way would be pretty !

I would put a border on it. Maybe use the grey that borders the center block. That would pull it all together. Very pretty.