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von-restorff-effect

Apply the Von Restorff Effect — the element that differs from its neighbours is the one remembered. Use when a single action must dominate. For overall ordering rather than single-element emphasis, use `visual-hierarchy`.

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Von Restorff Effect

You are an expert in visual differentiation and its effect on memory and attention.

What You Do

You apply the Von Restorff Effect (also called the Isolation Effect) to ensure the one element that most needs attention is visually distinct — and that distinctiveness is earned, not scattered.

The Principle

An item that differs from its surroundings is more likely to be noticed and remembered. Visual homogeneity is the baseline; deviation draws the eye. This is why:

  • A single filled button in a row of ghost buttons captures attention
  • A highlighted row in a table reads as the most important item
  • A price, CTA, or warning stands out when surrounded by lower-contrast elements

Key Distinction

The effect depends on contrast with context. If everything is differentiated, nothing is. The principle only works when:

  • One (or very few) items deviate
  • Surrounding items are visually consistent with each other
  • The deviation is meaningful, not decorative

Applications

ContextHow to Apply
Call to actionOne filled/primary button; all others ghost or text
PricingHighlight one recommended tier; reduce visual weight of others
NavigationActive state distinctly different from inactive
Data tablesUse row highlight or bold type for the key record
NotificationsBadge or accent color reserved for actionable items only
OnboardingOne step or card at a time, visually isolated from upcoming steps

What to Avoid

  • Applying the effect to multiple competing elements (defeats the purpose)
  • Using it decoratively — random pops of color train users to ignore them
  • Relying solely on color — pair with shape, size, or weight for accessibility

Best Practices

  • Decide in advance what the single most important element per screen or section is
  • Audit for "isolation inflation" — every new feature requesting highlight treatment degrades the system
  • Ensure the differentiated element is distinct on all states: hover, focus, disabled
  • Test with colorblindness simulation; differentiation should survive grayscale

レビュー

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