Very pretty room, Katie. Going by the photo, I'd never there's a problem : ) .

This blog post by interior designer Laurel Bern, on paint colors for north facing rooms, might be helpful; read all the comments too,

https://laurelberninteriors.com/2014/10/05/im-losing-sleep-north-facing-room-paint-color/

I would go to Benjamin Moore and get the color cards for both Van Courtland blue and Jamestown blue and then pick a lighter shade (maybe a shade or two?) of each. Whatever you decide, get decent-sized sample pots to try in the room.

You could also try a less "greige" neutral; it would depend on your light, but two that work for me in my western Canadian light (and I will admit that I am a color person who has most of the house painted BM Copacabana yellow) are BM Natural Wicker and BM Windham Cream.

I would also be tempted to try faux/fixed Roman "shades" or valances on the windows, to add some color and pattern to the room, possibly instead of painting.

Updated to add: depending on what paint color you choose, you may have to repaint your trim, depending on how well the existing trim color plays with a new color.

Good luck, Katie, and let us see the changes here please : ) .

as it turns out, Woodlawn blue is on the same strip as Van Courtland Blue, two shades lighter.

Great, esp because now you can be checking to see how your existing white trim works with WB!

I just wanted to update with a few pictures of my dining room.

I did go with Woodlawn Blue, and I love it! In low light situations (most of the day), it is a quiet gray blue that still livens up the room:

In evening and early morning it goes much greener:

It is NEVER baby blue, thank goodness.

The chair rail and white portion of the wall are Chantilly Lace, which I chose because it kept its crisp whiteness even in the shadowiest times of day. (And... I liked the name.) BUT it doesn't match the trim at all. I will repaint it to match but couldn't quite face the task of doing it once I was done with this project!

(You can see here how the original trim color looks dingy next to the Chantilly Lace.)

I can see now a dark blue gray would have been a big mistake! Also, when I looked at pictures online of Woodlawn Blue I really disliked it, but it seems completely different in my space.

Thanks again for all your help!

Simply lovely, Katie.

Thank you both! Without both of your help it would probably be gloom city in there right now.

It's amazing what you can do through the internet : ) .

Very nice. Really like the look. You made a good decision.