Icon Design

Select the right icon for the job. Maps concepts to icons across three modern libraries, provides ready-to-use templates, and prevents common mistakes like broken tree-shaking and inconsistent styles.

Quick Reference

Concept	Lucide	Heroicons	Phosphor
Award/Quality	Trophy	trophy	Trophy
Price/Value	Tag	tag	Tag
Location	MapPin	map-pin	MapPin
Expertise	GraduationCap	academic-cap	GraduationCap
Support	MessageCircle	chat-bubble-left-right	ChatCircle
Security	Shield	shield-check	Shield
Speed	Zap	bolt	Lightning
Phone	Phone	phone	Phone
Email	Mail	envelope	Envelope
User/Profile	User	user	User
Team	Users	user-group	Users
Settings	Settings	cog-6-tooth	Gear
Home	Home	home	House
Search	Search	magnifying-glass	MagnifyingGlass
Check/Success	Check	check	Check
Close/Cancel	X	x-mark	X
Menu	Menu	bars-3	List
Calendar	Calendar	calendar	Calendar
Clock/Time	Clock	clock	Clock
Heart/Favorite	Heart	heart	Heart

Library Selection

Library	Best For	Package
Lucide	General use, React projects	lucide-react
Heroicons	Tailwind projects, minimal style	@heroicons/react
Phosphor	Weight variations needed	@phosphor-icons/react

Default recommendation: Lucide (1,600+ icons, excellent React integration, dynamic loading via lucide-react/dynamic).

Selection Process

1. Identify the concept -- what does the label/title communicate?
2. Check semantic mapping -- see references/semantic-mapping.md
3. Choose library -- Lucide (default), Heroicons (Tailwind), Phosphor (weights)
4. Apply template -- see references/icon-templates.md
5. Verify consistency -- same style, same size within each section

Icon Style Rules

Rule	Detail
No mixed styles	Use all outline OR all solid in a section
No emoji	Use proper icon components (tree-shakeable)
Use currentColor	Icons inherit text color via stroke="currentColor"
Semantic colors	Use text-primary, not text-blue-500
Consistent sizing	Inline w-4 h-4, cards w-8 h-8, hero w-10 h-10
Tree-shaking safe	Use explicit named imports and icon maps, never import *
Accessibility	Add aria-hidden="true" to decorative icons, aria-label to buttons

Common Mistakes

Mistake	Correct Pattern
Importing all icons with import * as Icons breaking tree-shaking	Use explicit named imports and a static icon map
Mixing outline and solid icon styles within the same section	Pick one style per section and apply consistently
Using emoji instead of proper icon components	Always use tree-shakeable icon components from Lucide, Heroicons, or Phosphor
Hardcoding color values like text-blue-500 on icons	Use semantic colors like text-primary so icons inherit theme changes
Choosing icons by visual appeal rather than semantic meaning	Map the concept first using the semantic mapping reference, then select the icon
Missing aria-label on icon-only buttons	Add aria-label="Description" to buttons containing only icons
Using old Heroicons import paths without size prefix	Use @heroicons/react/24/outline with the size prefix

Delegation

• Audit existing icon usage for consistency and tree-shaking issues: Use Explore agent to scan imports and identify mixed styles or wildcard imports
• Migrate icons from Font Awesome or Material to modern libraries: Use Task agent with the migration guide reference
• Plan icon system architecture for a design system: Use Plan agent to select library, define sizing conventions, and establish semantic mappings

References

• semantic-mapping.md -- Full concept-to-icon tables by category (quality, price, location, trade-specific, navigation, status)
• icon-templates.md -- React/HTML patterns with Tailwind (feature cards, buttons, inputs, navigation, status badges)
• library-comparison.md -- Lucide vs Heroicons vs Phosphor (features, bundle size, import patterns)
• migration-guide.md -- Font Awesome, Material Icons, Feather, and emoji to modern equivalents
• accessibility.md -- Decorative vs meaningful icons, aria attributes, screen reader patterns