Colors are one of the most important parts of design as they affect the feel and the perception of an object or a space. Color theory delineates two main classes of colors: warm and cool colors. Energetic spaces are formed by the warm colors of red, orange, and yellow, which make spaces feel intimate. Blues, greens, and purples are cool colors that engender a sense of calm and peace. Combining colors and their multifaceted attributes enables you to manipulate your designs’ feelings. Let’s examine the relations between warm and cool colors, their science, and some practical tips for blending them for the utmost impact.