Also, at least with Sherwin Williams paints, some darker colors require a different (darker) shade of primer. We used mostly lighter colors throughout the house but painted one room and a couple of accent walls in two other rooms with SW Spicy Hue (a deep cinnamony red brown hue). Those walls had to be primed with a dark grey primer AND it still took something like 4 or 5 coats of paint for the Spicy Hue to look exactly right. Final result is gorgeous but it took some work to get there. (p.s. I KNOW for a fact that the paint used was Sherwin Williams and not some cheaper knock-off tinted to match the SW color because I went to SW myself and bought both the paint and the primer myself and delivered it to the painters.) My painters did not charge extra but I chose to pay them a small bonus because I knew they wound up doing quite a bit more work than anticipated on those walls.

I think you're on track with a grey or greige color, especially if the red shutters and door are staying. If you're painting those two, a dark navy blue or charcoal might look nice.

Posting photos of your space will get you more responses

Thank you all for your input. We made a bunch of expensive changes to other rooms in the house so I'm now at the point of doing little ones bit by bit. The chandelier change is on the list! The house has great bones but it was built in 2016 with very basic fixtures (the fan is just one example). I have three large rugs and this one fits in this room. The original one that did go with the bedding now lives in the family room and has to stay there. Admittedly I don't love the color scheme in the bedroom rug but its the one I have. I'd be happy to change the bedding but I have a black shedding dog that is allowed on the bed. I'll need something dark. I could try cream and see if it drives me nuts :) The headboard pic is attached. Bedroom furniture has to stay. Replacement is in the future but I don't see that happening for 2-3 years.