Yes, blue and green do match with the brown sofas. It would look nice. I have brown sofas with light brown walls and I love it. Blue is a bright color and it would look great with a neutral color like brown.

I think either color, blue or green, would go with brown. I would suggest getting some paints samples to see which of the colors you like best with the shade of brown you have. You can also add other items to your decor with these colors to make them blend in even more.