Hi---well honestly neither color is working here. I'll explain why. First you desire a warm calm room and the green on the walls is a calm color-but the undertone is blue (calm too), so against the warm undertones in the floor, the cooler (blue) undertone becomes more prevalent thus, resulting in a "cool" calm room. The color actually looks like mint green. The same goes for the fireplace. That undertone is cool as well and because of these two cool colors against the warm color of the floors, you're not getting that warm, calming feel you really want. So there are a couple of ways to go about this. #1 is to paint the green a warmer color (yellow or red undertone) and hope there is enough contrast between it and the fireplace so you don't have to repaint that too. Option #2 paint just the fireplace blue to show more contrast between the wall color and the floors, or Option #3 repaint the walls and fireplace. It's entirely up to you. I'll give you colors for each.
option #1 wall color: SW 6163 Grassland or SW 6164 Svelte Sage
option #2 fireplace color SW 6221 Moody Blue
option #3 is to do both options 1 & 2 with the colors mentioned OR if you prefer more contrast, do option #1 and paint fireplace SW 6235 Foggy Day

Goodness, sorry to ramble, easier to explain if face-to-face. Anyway, pick up the paint chips and see how they look in your room before committing to a color. I think you'll be happy with any of the combos mentioned. Good Luck to you and don't fret too much about repainting-it's only paint and it's an inexpensive fix that can entirely change the way how you feel about your space. :)