he 3-5-7 Rule in Interior Design T The 3-5-7 rule is all about arranging home interior items in odd numbers (3, 5, or 7). Odd groupings look more natural, balanced, and visually interesting. What It Means Our eyes prefer slight asymmetry. Using odd numbers + mixing heights, textures, and shapes creates a setup that feels intentional and aesthetically pleasing. Why It Works Why It Works Using odd numbers + mixing heights, textures, and shapes creates a setup that feels intentional and aesthetically pleasing. Our eyes prefer slight asymmetry. Where to Use It + CTA Use the rule for: • Coffee tables • Shelves • Wall art • Side tables • Dining centerpieces