Red infuses energy into a room, and it’s one of the most rewarding yet difficult shades to work with in the home. Too much of this fiery color can feel heavy-handed, but achieving the proper harmony will add richness and visual interest unlike any other. The best approach is to start small, with upholstery and accent pieces, or try it in a tiny space like a powder room. Planning to paint? Be sure to test it directly on the wall, then check it throughout the day and see what undertones emerge—it’s easy to go too pink or too orange. As a counterpoint, coordinate red with muted tones of blue or gray, and if you use it on walls, consider sticking with neutral furniture.