Floor With Black, Red and White Tiles

I would go with med. grey. My brother did a spare room in grey. Had black bedspread, red desk lamps and white window/door trims. Made the red pop out. I never would have thought those colors would look great together but they really looked sharp!

I think three white and the main wall red, say, behind the washer and dryer. It will brighten the place up and give you a smile.

I would go with white.