Painting your walls brown can create a warm, cozy, and grounding atmosphere in a room, often associated with feelings of comfort and stability, making it a good choice for spaces where you want to relax like bedrooms or living rooms; however, the exact feel depends on the shade of brown you choose, with lighter tones appearing more inviting and darker shades creating a more moody vibe. 

Psychologically the color brown is linked to earth and nature which could provide a sense of security and grounding for a homeowner. However the shade of brown does matter. If you are trying to create a welcoming feel for a small room with limited natural light it is best to choose light browns. Medium browns offer a neutral, balanced look which could fit the aesthetics for most living spaces. Looking for a more sophisticated and dramatic feel, dark browns are your answer. Dark browns are best used on accent walls and large rooms with bright lighting. When you want a cozy feel go with a warm brown, to be a little more fancy a cooler brown is suggested. Balance brown walls with lighter colors on furniture. 

This year warm neutrals like terracotta, taupe, and creamy beige are very popular. These color bring an inviting feel to any space, making them perfect for living rooms and bedrooms. They also pair beautifully with natural materials like wood and stone, creating a cozy atmosphere.