03 · Service

High-Fidelity UI Design

Hi-fi UI is the visible face of the product, and the visible face has to do a lot more than look good. It has to be legible at 3am, accessible for screen readers, performant on a 4G connection, and consistent across the next ten releases. The polish is the easy part - the consistency is the work.

03 · High-Fidelity UI Design

How I approach this

The work, one phase at a time.

Hi-fi work begins with the design system, not a blank canvas. New components go into the system - not bolted onto a single screen - so the rest of the product benefits from every decision.

Visual hierarchy is established before screens get composed: type scale, color tokens, spacing scale, motion language. Once these are stable, screens compose quickly and consistently.

Every design accounts for the worst-case user context - low contrast environments, slow networks, distracted attention, screen readers, larger text settings. The demo is not the user.

Accessibility is a default, not a phase. WCAG 2.1 AA is the baseline; 2.2 where the brief allows. Healthcare projects also align with ABDM and ABHA requirements as system-level decisions, not per-screen scrambles.

Process · in practice

What I deliver

Tangible outputs from this engagement.

01
Hi-fi screen designs across breakpoints (web + mobile)
02
All states: empty, loading, error, partial, success
03
Component-level documentation in Figma
04
Accessibility annotations and WCAG conformance notes
05
Cross-platform variants (iOS HIG, Material 3, Web) where applicable
06
Design tokens documented and ready for Dev Mode handoff

Methods & frameworks

The shoulders I stand on.

Atomic Design (Brad Frost)
Atoms → molecules → organisms → templates → pages. The mental model that keeps hi-fi work systemic.
WCAG 2.1 / 2.2 AA
Contrast ratios, focus indicators, motion sensitivity, semantic structure - all treated as defaults.
Apple HIG and Material 3
Platform conventions for iOS and Android - followed when they help users, broken when they don't.
8pt grid systems
Consistent spatial rhythm across components, surfaces, and screens.
Modular type scale
A predictable scale that scales across breakpoints without ad-hoc font sizes.
ABDM / ABHA compliance
India's digital health framework - treated as system-level requirement on healthcare projects.