Perception

Figure-Ground

Also known as Figure-ground relationship, Figure-ground principle

People instinctively separate what they see into a foreground object (the figure) and the background (the ground), and focus on the figure.

Experience · UX & Design Science2 research sources
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A bottom sheet rises in front of a dimmed screen, becoming the figure against the ground — an illustration of Figure-Ground.

See it in action

The same screen without and with Figure-Ground. Watch both sides play out, then compare the outcome.

Dialog with no backdropInboxLeave without saving?StayLeave

The dialog blends into the page behind it; people tap the list instead and wonder why nothing works.

Dimmed ground, raised figureInboxLeave without saving?StayLeave

Dimming the page pushes it into the background; the dialog becomes the only figure and gets the tap.

What to watch: how a dark backdrop instantly separates what's in front from what's behind.

Do

Separate layers with contrast, shadow or a dimmed backdrop so the active surface is unmistakable.

Don’t

Overlay content in the same tone as the page, or let busy backgrounds compete with text.

Key takeaways

  • Make the most important element clearly stand out from its background.
  • Use overlays, shadows and dimming to bring modals and menus to the foreground.
  • Ambiguous figure-ground relationships make interfaces confusing.

Quick facts

Also known as
Figure-ground relationship, Figure-ground principle
Described by
Edgar Rubin
Year
1915
Category
Perception

Figure-Ground explained

Figure-ground perception is the brain's way of separating objects from their surroundings. Every scene is organised into a figure, which has shape and appears in front, and a ground, which appears behind and is less defined.

Contrast, size, colour, blur, shadow and position all help the brain decide what is figure and what is ground. When these cues conflict, perception can flip between interpretations, as in the Rubin vase.

In UX design, clear figure-ground relationships make focus obvious. Users immediately understand which layer they are interacting with.

Where it comes from

Danish psychologist Edgar Rubin studied figure-ground perception in 1915, illustrating it with the famous Rubin vase, which can be seen as either a vase or two faces in profile. Gestalt psychologists later incorporated it as a core principle of perception.

How it shows up in apps

Modals, bottom sheets, menus and floating buttons rely on figure-ground: dimming or blurring the background pushes it back and brings the active element forward. Low contrast between content and background makes it hard to see what is interactive or important.

Figure-Ground examples

When a user taps 'Share', a bottom sheet slides up while the rest of the screen dims. The sheet becomes the figure and the dimmed page the ground, so users focus on sharing options.

  • Modal dialogs

    A dimmed backdrop behind a dialog pushes the page into the background and focuses attention on the decision.

  • Floating action buttons

    Elevated buttons with shadows appear above content, signalling that they are always available actions.

  • Text over images

    Hero banners add a dark gradient behind white text so that the text stays the figure against busy photography.

How to apply Figure-Ground

  1. Use contrast, elevation and dimming to bring active layers forward.
  2. Ensure text and controls have sufficient contrast against backgrounds.
  3. Avoid busy backgrounds behind important content.
  4. Use consistent elevation levels across the product.
  5. Test designs in grayscale to check figure-ground clarity.

Want Figure-Ground checked in your own product? Our mobile app ux audit evaluates it alongside the other principles that shape how users decide, onboard and stay.

Common mistakes

  • Placing text over busy images without an overlay.
  • Using subtle shadows that fail to separate layers.
  • Inconsistent elevation that confuses which layer is active.

How to measure it

Check contrast ratios against WCAG guidelines, and use first-click tests and five-second tests to see whether users identify the active layer and primary content immediately.

Frequently asked questions

What is Figure-Ground?

People instinctively separate what they see into a foreground object (the figure) and the background (the ground), and focus on the figure.

Where does Figure-Ground come from?

Danish psychologist Edgar Rubin studied figure-ground perception in 1915, illustrating it with the famous Rubin vase, which can be seen as either a vase or two faces in profile. Gestalt psychologists later incorporated it as a core principle of perception.

How does Figure-Ground apply to app design?

Modals, bottom sheets, menus and floating buttons rely on figure-ground: dimming or blurring the background pushes it back and brings the active element forward. Low contrast between content and background makes it hard to see what is interactive or important.

What is the Rubin vase?

An ambiguous image created by Edgar Rubin that can be seen as a vase or as two faces, demonstrating how perception separates figure from ground.

Why do modals dim the background?

Dimming pushes the page into the background, making the modal the figure and focusing attention on it.

How do you measure Figure-Ground in a product?

Check contrast ratios against WCAG guidelines, and use first-click tests and five-second tests to see whether users identify the active layer and primary content immediately.

Sources

  1. Rubin, E. (1915). Synsoplevede Figurer. Gyldendal. Find on Google Scholar ↗
  2. Koffka, K. (1935). Principles of Gestalt Psychology. Harcourt, Brace. Find on Google Scholar ↗

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