Do you want to match the teal or do you want a color that coordinates with it? We have a couch that is a med.-dk teal. We have a very light beige/cream colored carpet and I'm in the process of painting the walls a very light subtle peach. I originally thought I wanted a light shade of teal, but was afraid it might be more teal than I could handle for very long...and I'm not into repainting frequently, lol! The color is a Behr color called Peach Fade that I had mixed in BM. Depending on the light it comes off as a very soft subdued peach or sometimes a creamy offwhite/yellow. I didn't want it strong enough that anyone walking in would see the walls and think 'peach' if you know what I mean. My floorplan is very open between the formal living, dining, and family room so I needed something that gave a bit of color yet served as a neutral and the peach tone is working well with all those rooms and furnishings.

What is the style of the rest of your home? With Finland, I tend to associate it with more of sort of a pine/fir nordic look (cabin). I like your picture. It is very tranquil :). An off white nubbly linen headboard might work though and reflect the texture of the birch. ...White or sheer billowy curtains to reflect the breeze through those trees ...watery colored blue green glass lamps to echo the light on the water and the water? I would have suggested a duvet cover I bought from the Company Store a year or so ago that has a texture that reminds me of birch, but sadly it is discontinued. Maybe something from Marimekko? https://www.finnstyle.com/marimekko-pihkassa-bedding.html

I agree with Groveraxle that paint comes last, but am a huge proponent of whole home color pallets. You want your home to have a sense of harmony, so colors shouldn't be selected in isolation. When I plan on redecorating I always start by looking at the things I cannot change or will not change. I have to work with some items. My last home had pink under tone tile throughout. Limited a lot of other choices, but I couldn't afford to change 1800 sf of tile that was in perfectly good condition. My current house that I am renovating is getting a full reno except for a Purple/Red/Green slate floor in the entry and a brick fireplace that matches the brick on the outside of my home. These are here to stay, so everything has to work with these colors. You may have cabinets, countertops, backsplash, flooring, furniture or art that are on your must stay list. My second step is to think about the colors that make my heart sing. Everyone has favorite colors or color combinations that they love. Your home should reflect your personality. It should envelop you in colors that make you feel like a 10! If you look awful in yellow do you want your picture taken in a yellow room? If you hate gray should you paint your house gray just to keep with current trends? My next step is to lay out the colors in the things that must stay on a big white sheet. I lay the colors out in order as they would be seem from room to room. Then I decide on how and where I can incorporate the colors that I love. I keep playing with these colors until I have a flow that works. The colors that I selected for one room have to look good with the colors I have selected for the next room and have to match the energy that I want for each room. (My office is my highest energy room, kitchen next, then living room, which all have higher energy than my master suite.) My next step is to select a neutral that works with both the colors that have to stay and the colors that I love. My last step is to select a white that works with all the colors and the neutral. Now I can go about the business of buying things that work with my overall color scheme. If you pick colors for your family room in isolation, those colors may not work well with the kitchen, so then you change your kitchen to work with this room and it doesn't work with the colors in the dining room, so you change the dining room and those colors don't work with the formal living room . . . I choose the paint for each room last because my choices of fabrics and art are limited. Once I find the perfect furniture I can use the walls to add color or paint them with my neutral if I have found colorful fabrics.

Can the piano go on the stair wall? Center FP on wall between single window and corner, face a sofa to the FP with a chair on each side of FP