Using three light fixtures creates layering and rhythm in your room’s lighting design. For example, three pendant lights grouped over a kitchen island or dining table add both function and visual drama. Select fixtures with varied heights or shapes for dynamic interest, such as a trio of glass pendants with differing lengths. The rule of three ensures the lighting feels curated yet natural, providing warm accent lighting and defining zones within open floor plans. This technique brings cohesion to your space and highlights key areas effortlessly.