If you want to create a relaxing atmosphere in the living room you should use light colored in the area such as blue and white. The combo of light hues will create a nice effect for sure in the room when it is used correctly with the furniture items that you will place in the area. Keep the decoration as simple as possible to give it a minimalistic touch. There are many other ways through which you can create a peaceful environment in the area. Check my ideas, they are helpful.