Design System Starter

A comprehensive Claude Code skill for creating and evolving production-ready design systems with design tokens, component architecture, accessibility guidelines, and documentation templates.

Purpose

This skill helps you build robust, scalable design systems that ensure visual consistency and exceptional user experiences across your products. It provides structured guidance for:

• Defining and organizing design tokens (colors, typography, spacing, shadows)
• Architecting components using atomic design methodology
• Implementing theming and dark mode support
• Ensuring WCAG 2.1 Level AA accessibility compliance
• Creating comprehensive component documentation
• Establishing maintainable design system workflows

When to Use

Use this skill when you need to:

• Create a new design system from scratch
• Standardize UI patterns across multiple products
• Implement design tokens for consistent styling
• Structure components using atomic design principles
• Ensure accessibility compliance (WCAG 2.1 AA)
• Set up theming and dark mode support
• Document component libraries effectively
• Migrate from inconsistent UI patterns to a unified system

How It Works

The skill provides comprehensive guidance and templates organized around five core areas:

1. Design Tokens

Structured JSON templates for defining foundational design decisions:

• Color systems: Primitive colors (50-950 scale) and semantic tokens (brand, text, background, feedback)
• Typography: Font families, sizes, weights, line heights, letter spacing
• Spacing: Consistent scale based on 4px or 8px units
• Border radius: Reusable corner rounding values
• Shadows: Elevation system for depth

2. Component Architecture

Atomic design methodology for building UI:

• Atoms: Primitive components (Button, Input, Label, Icon)
• Molecules: Simple compositions (FormField, SearchBar, Card)
• Organisms: Complex compositions (Navigation, Modal, ProductGrid)
• Templates: Page layouts
• Pages: Specific instances with real content

3. Accessibility

Built-in WCAG 2.1 Level AA compliance:

• Color contrast validation (4.5:1 for normal text, 3:1 for large text)
• Keyboard navigation patterns
• ARIA attributes and screen reader support
• Focus management

4. Theming

Multiple approaches for light/dark mode:

• CSS custom properties
• Tailwind CSS dark mode utilities
• Styled Components ThemeProvider

5. Documentation

Standards for component documentation:

• Component purpose and usage
• Props API with types and defaults
• Accessibility notes
• Common examples

Key Features

Design Token System

• W3C design tokens format
• Primitive and semantic color systems
• Typography scales with accessibility in mind
• Consistent spacing based on mathematical scale
• Shadow system for elevation

Component Templates

• TypeScript-first component templates
• Polymorphic component patterns
• Compound component API design
• Variant and size systems
• Complete accessibility support

Bundled Resources

The skill includes ready-to-use templates and references:

• templates/design-tokens-template.json - Complete token structure
• templates/component-template.tsx - React component boilerplate
• references/component-examples.md - Full implementations with variants
• checklists/design-system-checklist.md - Audit checklist

Accessibility First

• WCAG 2.1 Level AA compliance by default
• Color contrast guidelines and testing recommendations
• Keyboard navigation patterns
• ARIA best practices
• Screen reader support patterns

Usage Examples

Example 1: Create a New Design System

Create a design system for my React app with dark mode support

The skill will guide you through:

1. Setting up design tokens (colors, typography, spacing)
2. Creating atomic components (Button, Input, Card)
3. Implementing dark mode with CSS variables
4. Ensuring accessibility compliance
5. Setting up documentation structure

Example 2: Add Design Tokens

Set up design tokens for colors and spacing using the 8px scale

Provides:

• Color token structure (primitive + semantic)
• Spacing scale based on 8px units
• JSON format compatible with Style Dictionary
• CSS variable implementation

Example 3: Component Architecture

Design component structure using atomic design for my dashboard

Delivers:

• Breakdown of atoms, molecules, organisms needed
• Component hierarchy and relationships
• Props API design patterns
• Composition guidelines

Example 4: Accessibility Audit

Ensure WCAG 2.1 compliance for my button components

Checks:

• Color contrast ratios
• Keyboard navigation support
• ARIA attributes
• Focus states
• Screen reader announcements

Example 5: Theming Implementation

Implement theming with dark mode using CSS variables

Provides:

• CSS custom property structure
• Light/dark theme definitions
• Theme switching logic
• Component integration patterns

Triggers

The skill activates on these common phrases:

Output Examples

Design Tokens Output

Complete JSON structure with:

• Color primitives (50-950 scale for each hue)
• Semantic color tokens mapped to primitives
• Typography scale (xs to 5xl)
• Spacing scale (0 to 24)
• Border radius and shadow tokens

Component Architecture Output

• Atomic design hierarchy diagram
• Component inventory by category
• Props interface definitions
• Implementation examples with TypeScript
• Accessibility notes for each component

Theming Output

• Theme structure interface
• Light and dark theme definitions
• CSS variable mapping
• Theme provider setup
• Component integration patterns

Accessibility Checklist Output

• Color contrast validation results
• Keyboard navigation requirements
• ARIA attribute recommendations
• Screen reader testing notes
• Focus management patterns

Design Philosophy

The skill is built on four core principles:

1. Consistency Over Creativity: Predictable patterns reduce cognitive load and help users learn once, apply everywhere

2. Accessible by Default: WCAG 2.1 Level AA compliance minimum, keyboard navigation built-in, screen reader support from the start

3. Scalable and Maintainable: Design tokens enable global changes, component composition reduces duplication

4. Developer-Friendly: Clear API contracts, comprehensive documentation, easy to integrate and customize

Integration

Works seamlessly with popular tools and frameworks:

• React/TypeScript: Primary target with complete TypeScript support
• Style Dictionary: Compatible token format for multi-platform output
• Tailwind CSS: Design token mapping to Tailwind config
• Styled Components: Theme provider integration
• Storybook: Documentation templates and story patterns
• Figma: Token naming aligned with Figma variables

Related Skills

• landing-page-guide-v2: Uses design system principles for landing pages
• nextjs15-init: Can initialize projects with design system structure
• mui: Material-UI specific patterns (alternative approach)

License

MIT

Version

1.0.0