What is the opposite of brown?

The opposite color of brown is often considered to be a shade of blue. Brown is a mixture of primary colors (primarily red, green, and blue), while blue is a primary color on its own. Blue is often associated with calmness, serenity, and tranquility, while brown is often associated with warmth, stability, and reliability. Blue is commonly used in interior design to create a clean and peaceful atmosphere, while brown is often used to create a cozy and inviting environment.