Design Dilemma: Emily’s Living Room, Kitchen and Couches

I recently posted this question on Apartment Therapy:

"I just bought my first place and I'm dying to paint the interior. I need a color for the living room and a color for the kitchen and I need them to look good together.

The biggest issue is my couches. While whether or not they are attractive is debatable, they are definitely a little loud. I need the color of the living room walls to complement the couches, and then I need that color to blend well with the kitchen. I thought about a white kitchen with a color on the door, however I'm not sure if white is going to make the kitchen look too sterile. Any suggestions?"
 
I got some good answers; the most popular one was to use the blue color that is in the couch. I was wondering if you have any suggestions for a hue that would match or compliment this blue.

I've looked at paint samples for hours and I am still unsure how dark/bright to go with the wall color and where to apply the color. The most important thing for me is to brighten the living room up, however I can't see many light colors going with those couches.

I do plan on keeping the couches and I want to incorporate them into the decor without getting stuck with too much of a retro feel. Also, a few people suggested using the blue in both rooms to create a more open space. I'm having trouble picturing that much of one color, although I do like the idea of keeping a unified feeling throughout both rooms.

Any thoughts? Thanks!

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