HOW IT WORKS: When one element differs in color, size, shape, or context, it attracts attention and strengthens memory retention. Designers can use contrast and differentiation to highlight important elements.

IN UX/UI/AI DESIGN: UX, UI, and AIX designers use the effect to emphasize calls to action, alerts, or critical information. AI systems can detect key content and make it visually or contextually distinct for the user.

EXAMPLE: A checkout page highlights the “Confirm Purchase” button in a bold color. A GenAI interface emphasizes new notifications using size, color, or animation to ensure visibility and recall.