Due to the dark wooden floor If you are able to add an area rug that will enable to brighten the colour of your living and dinging room will be amazing. So I would recommend a light colour perhaps an area rung that matches the colour of your wall or even a grey that matches the two sofa chairs you have on your right hand side. If you wish to have a great impact four your guest when they step into the room I would finally recommend a nice abstract art design on your wall could be at the top of your dining table or sofas. Hope this suggestion have been helpful today. Thank you

Thank you.

Any ideas on rug styles?

I think it's the grey sofa that needs to be tied in with the rest of the room. Perhaps by adding that colour to other areas of the room?.such as..Cushions on the white chairs. Some pictures on the walls.

Ive got two large abstract paintings with white frames that are put side by side to look like your looking out a window. The tones in it are mostly blues.
Im just worrying about botching the room with a bad rug choice

Something like this ikat from overstock? It channels your original inspiration and seems to bring all your colors together.

would any somewhat traditional rugs fit at all?

Something like this from laylagrace.com?

Do you think a dark blue green colour for the wainscoting would be nice?

That's why I liked the first rug from overstock so much...it pulls in all the possible shades you might go with. Just personal preference, I'd put the blue on the walls and a cream on the wainscoting.

where did you find this Heriz Rug?

It was a generic image from google search. Search on navy heriz at wayfair, amazon or any of the sale aggregator websites to find one you like.

I would not paint your wainscoting a dark color because your flooring is already so dark. This rug has nice slate blue color to it but isn't too dark. It is a bit more of a tradition pattern. I think it would tie in your lighter color chairs and darker sofa nicely.