The coolness of the teal wall, chair, and pillows balances the warmth of the sofa.
The warm richness of the hardwood flooring pairs perfectly with the red sofa.
The blues in the artwork pop against the warmer hues in the room, creating some visual balance.
The focus on lighter cream tones helps lighten what would otherwise be a somewhat stark contrast between the red sofa and the blue wall.
Not only do these colors simply look great together but from an ambiance perspective, cream tones help visually cool down the fiery red of the couch.
Neutral grays pair exceptionally well with a red sofa. And when you throw in some dark blues and a couple of strategic pops of green, the result is spectacular.