Elements that look alike get read as related. The Law of Similarity, one of the core Gestalt principles from the early twentieth century, holds that the visual system groups elements sharing visual traits, color, shape, size, texture, or orientation, into a common category, regardless of where those elements physically sit. Similarity can override proximity entirely: a red dot far from another red dot will often be read as more related than a blue dot sitting right beside the first red one, if color is the strongest signal in the scene.
Law of Similarity
How visual consistency teaches users your interface's language
A
Designers Academy
30 July 2025 · 3 min read
DesignPrinciples
In brief
The Law of Similarity explains how users group visually similar elements, making it essential for consistent UI design that teaches interface language effortlessly.
