For different size of floors in different locations there are different suggestions that i could share to you.
Light gray walls with hardwood floors.
The hardwood floors and the textured walls unify this space with their light colors and subtle movement.
Grey wood look flooring.
The hardwood floors match the natural wood on the ceiling and window panes to create a wholesome country style.
Between grey beige taupe or greige neutrals are a great way to match your light wood floors while still giving your walls character.
Dark gray floors do make for a dramatic contrast with light colored walls and dark gray hardwood floors also provide a perfect backdrop for brightly colored furniture and accents such as red or teal.
This living room has a large row of windows lining the front wall.
Pale white oak wide plank wood floors were paired with light gray walls while the furniture goes for a more unified look using the same fabric for the upholstery.
Avoid darker variations of brown and yellow as they can be too much of a contrast from your floors causing a clash.
The furniture pieces were two sofas two armchairs with wood armrests an upholstered bench and a large wood stump coffee table with glass top.