Foundational guide

UX Design Principles

Seven pillars that shape how teams build products that are intuitive, inclusive, and adaptable.

Principle 1

User-Centered Design

Prioritize user needs, goals, and context throughout the design process.

User-centered design places real people at the center of every product decision. Instead of designing for internal assumptions or feature checklists, teams observe how users think, work, and struggle — then shape interfaces around those insights. The result is software that feels obvious because it matches the jobs people are already trying to complete.

Related UX Laws

Attention & Focus

Mental Model

Users bring expectations from prior experience to your product.

System Design Principles

Jakob's Law

Users expect your site to work like others they already know.

Attention & Focus

Paradox of the Active User

Users skip manuals and learn by doing immediately.

Principle 2

Usability

Make products easy to learn, efficient to use, and forgiving of mistakes.

Usability is the baseline expectation for any digital product. Interfaces should be learnable on first contact, efficient for repeat use, and resilient when users make errors. When usability fails, no amount of visual polish or marketing can compensate for the friction users feel in everyday tasks.

Related UX Laws

Cognitive Load & Decision Making

Cognitive Load

Mental effort required to use an interface should be minimized.

Interaction & Behavior

Fitts's Law

Time to reach a target depends on its size and distance.

System Design Principles

Postel's Law

Be liberal in what you accept; conservative in what you send.

Principle 3

Consistency

Maintain predictable patterns so users can transfer learning across the product.

Consistency reduces the cost of exploration. When buttons, labels, spacing, and interaction patterns behave the same way everywhere, users spend less time decoding the interface and more time accomplishing goals. Consistency does not forbid evolution — it requires intentional change with clear benefit.

Related UX Laws

System Design Principles

Jakob's Law

Users expect your site to work like others they already know.

Visual Hierarchy & Perception

Law of Similarity

Similar elements are perceived as belonging together.

Attention & Focus

Mental Model

Users bring expectations from prior experience to your product.

Principle 4

Accessibility

Design products that work for people with diverse abilities, devices, and contexts.

Accessible design expands who can use a product successfully. That includes readable contrast, keyboard navigation, screen-reader support, and layouts that adapt across screen sizes. Accessibility is not a late-stage audit — it is a design constraint that improves clarity for everyone.

Related UX Laws

Cognitive Load & Decision Making

Cognitive Load

Mental effort required to use an interface should be minimized.

Interaction & Behavior

Fitts's Law

Time to reach a target depends on its size and distance.

Attention & Focus

Selective Attention

Users focus on stimuli relevant to their current goal.

Principle 5

Visual Hierarchy

Guide attention to what matters most using size, contrast, spacing, and placement.

Visual hierarchy tells users where to look first, second, and third. Without it, every element competes equally and important actions get lost. Strong hierarchy combines typography, color, proximity, and whitespace to make scanning fast and decisions easier.

Related UX Laws

Visual Hierarchy & Perception

Law of Proximity

Near elements are perceived as related.

Visual Hierarchy & Perception

Law of Similarity

Similar elements are perceived as belonging together.

Visual Hierarchy & Perception

Von Restorff Effect

Distinct items among similar ones are remembered best.

Attention & Focus

Selective Attention

Users focus on stimuli relevant to their current goal.

Principle 6

User Control

Give users agency with clear navigation, reversible actions, and sensible defaults.

People trust products more when they feel in control. That means transparent navigation, undo paths for destructive actions, and settings that respect preference without overwhelming beginners. Control is a balance: enough freedom to adapt, enough guidance to avoid paralysis.

Related UX Laws

System Design Principles

Postel's Law

Be liberal in what you accept; conservative in what you send.

System Design Principles

Tesler's Law

Every system has irreducible complexity — shift it from user to system.

System Design Principles

Occam's Razor

Prefer the simplest solution that works.

Principle 7

Context Awareness

Adapt experiences to device, task, location, and moment of use.

Context changes what users need from an interface. A commuter on mobile, a manager on desktop, and a first-time user in onboarding all bring different constraints. Context-aware design anticipates those differences and surfaces the right tools at the right time instead of showing everything at once.

Related UX Laws

Memory & Recall

Working Memory

Temporary storage for information needed to complete a task.

Interaction & Behavior

Flow

Immersive focus emerges when challenge matches skill without interruption.

System Design Principles

Pareto Principle

Roughly 80% of outcomes come from 20% of causes.