the blue ones you posted are too far over in the blue section. they don't tie in the gray or brown. (if you had white walls and a white sofa, then fine. they would work)

do a rug like Judy has shown you where all of your colors meld.

VALENCIA 204 Area Rug, Gray/Multi, 5'x8' · More Info

Safavieh Vintage Persian Collection, VTP408 Rug, Grey/Multi, 9'x11'7" · More Info

How about any of these? I really liked the grey print but wasn’t sure if grey rug and grey walls would be just too much GREY.

Or this? It has brown to tie in the couch. Not sure if it looks too much like grandma’s rug though.

those are a little too blue/gray. your sofa is a warm brown, floors-brown, and the walls a warmer gray shade. you're bringing in grayish/blue rugs. you want warmer grays. doing a warmer rug like judy posted, with that gorgeous burnt orange wood chair, would look beautiful in your room.

if you want to use blues, then consider repainting the walls to a blue/gray.

I think these would look much better with what you have in the room. And I would consider an accent chair like the one pictured above. doesn't have to be that exact color, but something warm toned

this one is beautiful w/the saffron shades,,,has your grays/browns, touch of blue, and would look gorgeous against your dark floors. Ditto the one below it.

Safavieh Vintage Persian Rug, Saffron, 8'x10' · More Info

Kaleen Middleton MID02 5'x7'9" Copper Rug · More Info

when it's time to update

this one goes w/your sofa

Nourison Contour 8' x 10'6" Mocha Contemporary Indoor Area Rug · More Info

Rizzy Home Bellevue BV3728 Rug, 7'10"x7'10" Round · More Info

Loloi XAVIER XV02 TAUPE / AQUA RUG · More Info

You've been given some great advice by two pros--a rug that blends the different color elements of your room--brown sofa, brown floors.Your room needs pattern as well. Is there a reason you keep picking mainly blue rugs since you already have one? Gray won't work at all. If you like blue, then get blue, but make sure it has some warm brown tones in it. If you like gray, then get some brown in there. Don't buy a rug in isolation from your "givens" brown sofa, brown floor, white walls. Go for high contrast against your dark floors and dark sofa.

Cool Abstraction Multi Rug, 5'x8' · More Info

Diamond Illusion Multi Rug, 5'x8' · More Info