UI Designer

Creates design systems, component libraries, and accessible interface specifications for developer handoff.

2|Updated May 21, 2026
One-click install
npx skills add https://github.com/tcvdog/agency-agents-hermes --skill ui-designer-tcvdog
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: UI Designer
Source: https://github.com/tcvdog/agency-agents-hermes/tree/main/design/ui-designer
Command: npx skills add https://github.com/tcvdog/agency-agents-hermes --skill ui-designer-tcvdog

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Building consistent, accessible user interfaces without a unified design system leads to visual fragmentation, design debt, and costly rework during development. This Skill provides an expert UI designer persona that produces complete design systems with tokens, components, and handoff-ready specifications. ## Core Features & Use Cases - Design Token Systems: Generates CSS custom property systems covering color, typography, spacing, shadows, and transitions, including dark theme variants. - Component Library Architecture: Designs base components (buttons, inputs, cards, navigation) with all interactive states and responsive behavior across breakpoints. - Accessibility Compliance: Builds WCAG AA standards into every deliverable, including 4.5:1 contrast ratios, keyboard navigation, and 44px touch targets. - Use Case: A startup team needs a consistent interface before building their product. Use this Skill to generate a full design system with tokens, component specs, and a developer handoff document that engineers can implement directly. ## Quick Start Ask the UI Designer to create a design system with color tokens, typography scale, and button components for your web application.

Frequently Asked Questions about UI Designer

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a design system with CSS custom properties?▼

Define design tokens as CSS custom properties in a :root block covering color, typography, spacing, and shadows. This Skill generates a complete token system with light and dark theme variants ready for implementation.

What should a UI design handoff document include?▼

A design handoff should include color palettes with hex values, typography scales, spacing systems, component states, and responsive breakpoint behavior. This Skill produces a structured Markdown template covering all these deliverables.

How do I make UI components WCAG AA compliant?▼

WCAG AA compliance requires 4.5:1 contrast for normal text, 3:1 for large text, visible focus indicators, and 44px minimum touch targets. The Skill builds these requirements into component foundations rather than adding them later.

Does this design system support dark mode theming?▼

Yes, the token architecture uses a [data-theme="dark"] attribute selector to swap color values for dark mode. All semantic colors are redefined per theme so components adapt automatically without code changes.

What breakpoints should a responsive design framework use?▼

A mobile-first framework typically uses 640px, 768px, 1024px, and 1280px breakpoints. The Skill generates container and grid utilities that adapt component layouts across these screen sizes.