I have a pretty traditional colonial house. Staircase and foyer in the middle with half bath under stairs. And living room, kitchen, and what will be my sitting room all flowing in a circle around those stairs. I just had my cabinets painted White Dove (BM)...sorry I don't have pics since they were painted. My cabinets are a green Corian color and my floor is tiled with big reddish/brown tiles. The living room color you see (and the color below chair rail in these pics) is Ralph Laurens Crabapple. I am leaving this in my living room so I need the kitchen to coordinate with this color AND those green countertops. (hate them but not gonna change them at this point)...My sitting room is opposite the living room...it is a room wrapped in beautiful wainscoting. So I need a color recommendation to go there too please. And you can see my little half bath from the kitchen too so a color recommendation for that too would be great! No windows in this bathroom. I've included a link to my blog where I posted pics and asked for help when deciding to paint the cabinets. Hope they are helpful. :-) Here is a link that might be useful: Help me paint my kitchen

Again, there are so many blues and grays out there that will work with all of your colors. I suggest that you go to your favorite paint website (I love Behr and I go there all the time to choose colors for my house) and play with paint colors that you can visually paint in a room (you can choose the room). Once you find something you like, even if it's a couple of colors, I suggest buying paint samples. Once you get the samples, paint a decent sized section on a wall or two and see how it looks during the day and night. Give yourself a couple of days to decide if that is the shade you want. It's what I did when I moved in our house 3 years ago. It's how I found the shade of blue in my dining room and the shade of gray in my living room, which is in the below photo:This is Classic Silver from Behr and it is a true gray. It looks good with everything in my living room, including the wall hanging that is right of my Mom's painting. The wall hanging has a deep green border.

Sounds like a fireplace re-do might be a longer-term fix. In the meantime, I'd paint the mantle a dark brown, a similar colour to your end tables. It's not trim and shouldn't be white. It pops out too much in the white colour. Another idea that doesn't involve any ripping-out is to go right over the existing mantle using a mantle slipcover in wood. Here's one of many how-to's on the internet. If you stained your brick as well, you could have a whole new look. https://www.fwmadebycarli.com/2011/01/making-of-slip-covered-mantel.html

Do all the furniture pieces and carpet stay in the room? If so, take a look at Bittersweet Stem by Sherwin Williams. What don't you like about the colors you sampled?