Color Suggestions Needed

[harshan8kaylen]

Hello Everyone.
I have A very Long living room with an oversized couch. I want some color suggestions for my room.
I was thinking more of going with a Yellow color pallette or brown. The room is long and narrow. There is dead space behind the couch. would like to be able to tie it in somehow with paint combo. Across the couch is tv with shelves (greyish/brown). Should I try to go lighter or will a dark color provide a good contrast. I am Little Bit Confused. Your Suggestions appreciated.