Overall I like the floral pillows, but the answer ultimately would depend on the color and design of the couch and the room in which it is situated. Thanks!

Have to agree with both commenters. I would have to see the other blues before being able to really give a good opinion. Have you thought about at least mixing patterns for some visual interest? I have never been a "matchy matchy" person even when that was the style. What about taking a main blue and then accessorize get with variants of that base blue, I.e. deeper, brighter, more muted?

You can consider a sparsely printed material for the seat and back but which has traces of the wall colours on a light background.

Chandru, You may want to mention your location to get relevant replies.