Atlas · DS097 · Aesthetic: Outlines

Border-Driven UI

The whole hierarchy is built from outlines and geometric joins.

Status in 2026: Descriptive label. An informal label for a look, not a defined system.
Trend 2027 to 2030: Rising (an editorial projection, not a forecast).
The term: Community or market label, or a descriptive term.

Definition

The whole hierarchy is built from outlines and geometric joins.

Traits

outlined boxes
cuts

Typical settings: ERP, Dashboards, Design systems.

When to use it, and when not

Consider it when the task and motivation match: users of structured information. Typical settings: erp, dashboards, design systems.

Be careful when the risk below would hurt the main task: too many lines become noise.

The audience is a hypothesis

"Users of structured information" describes a motivation, task or context for which this direction tends to be chosen. It was not measured, and it says nothing about any age, gender or other group.

UX risk and how to reduce it

Risk: Too many lines become noise.

Mitigation and accessibility: Vary visual weight by importance.

How to check: Test a prototype against a plain baseline on a real task: completion, time, errors, comprehension, accessibility and preference, segmented by context rather than by stereotype.

Evidence

Indirect: the sources support underlying principles, not a preference for this style.

The sources below support the principles that apply to this term. None of them shows that this style works better or is preferred.

Tuch 2012 (Supported): Visual complexity and prototypicality in first impressions.
Wagemans 2012 (Established): Perceptual grouping and figure-ground.

Heuristic scales

Relative editorial judgements from 1 to 5. They are not results of a study and not a measure of quality.

Visual complexity heuristic: 3 / 5 (1 is few visual elements, 5 is many layered elements)
Expressiveness heuristic: 2 / 5 (1 is restrained, neutral, 5 is highly expressive)
Information density heuristic: 5 / 5 (1 is sparse, 5 is dense)

In our library

No design-style recipe in @codeatlasdev/ui implements this term yet. You can still build it from the --ca-* tokens: see Theming.

Prompt for your AI

Paste this into a coding agent. It carries the trade-offs, and asks for a baseline to compare against.

Design this interface in the "Border-Driven UI" direction (aesthetic, outlines): The whole hierarchy is built from outlines and geometric joins.
Visual and interaction traits to use: outlined boxes, cuts.
Main UX risk: Too many lines become noise. Mitigate it: Vary visual weight by importance.
Keep it accessible to WCAG 2.2 AA: contrast, visible focus, keyboard operation, 24 px minimum targets, reflow at 320 CSS px and reduced motion.
Keep the content, hierarchy and behavior the same as a plain baseline so the two can be compared. Do not claim the style performs better; the choice should be validated with users.

Limits

The atlas is a broad, living catalogue, not every style that exists. No authority enumerates them, and the classes (movement, aesthetic, design system, layout, pattern, principle) overlap.
The 1 to 5 scores are relative editorial judgements. They are not results of a study and not a measure of quality.
An audience is a hypothesis about motivation, task and context. It was never measured and says nothing about any age, gender or other group.
The sources support underlying principles (visual complexity, legibility, grouping, accessibility, platform conventions). None shows that a particular style works better or is preferred.
The 2027 to 2030 trend is an editorial projection, not a forecast.
Terms in the Future / AI category rest on exploratory work, some of it preprints, with no causal validation.

Last reviewed 2026-10-25.

References

Tuch, Presslaber, Stöcklin, Opwis, Bargas-Avila (2012). The role of visual complexity and prototypicality regarding first impression of websites: Working towards understanding aesthetic judgments. International Journal of Human-Computer Studies.Supported
Supports: Two lab experiments with screenshots of real websites (119 in the first) found that visual complexity and prototypicality affected aesthetic ratings at presentation times of 50 ms and, in the second study, down to 17 ms.
Does not support: That people understand a value proposition in that time, or that any named style is preferred. The measure is a rating of aesthetics, not comprehension or task success.
Checked 2026-10-25.
Wagemans, Elder, Kubovy, Palmer, Peterson, Singh, von der Heydt (2012). A century of Gestalt psychology in visual perception: I. Perceptual grouping and figure-ground organization. Psychological Bulletin, 138(6).Established
Supports: A review of the grouping principles (proximity, similarity, common fate and others) and of figure-ground organization in contemporary perception research.
Does not support: Any claim about interface styles. It is a review of perception, not of screens, and says nothing about preference.
Checked 2026-10-25.