The blue interior design style features blue as the main tone, using different shades of blue (such as navy blue, azure, and haze blue) to create an atmosphere. It can be matched with white, gray, and (log color) for balance, often presented through fabrics, walls, and soft furnishings. It can create a sense of tranquility (light blue) or calmness (dark blue), suitable for bedrooms, studies, etc., conveying a fresh, relaxed, or elegant spatial temperament.