Intercom UI Skills

Opinionated constraints for building Intercom-style interfaces with AI agents.

When to Apply

Reference these guidelines when:

• Building light-mode interfaces

• Creating Intercom-inspired design systems

• Implementing UIs with Inter font and 4px grid

Colors

• SHOULD use light backgrounds for primary surfaces

• MUST use #FEFEFE as page background (surface-base )

• MUST use #4F3FE6 for primary actions and focus states (accent )

• SHOULD reduce color palette (currently 19 colors detected)

• MUST maintain text contrast ratio of at least 4.5:1 for accessibility

Semantic Tokens

Token HEX RGB Usage

surface-base

#FEFEFE rgb(254,254,254) Page background

surface-raised

#110D0C rgb(17,13,12) Cards, modals, raised surfaces

surface-overlay

#4F3FE6 rgb(79,63,230) Overlays, tooltips, dropdowns

text-primary

#8492A8 rgb(132,146,168) Headings, body text

text-secondary

#ABAAAB rgb(171,170,171) Secondary, muted text

text-tertiary

#939393 rgb(147,147,147) Additional text

border-default

#EAEBE7 rgb(234,235,231) Subtle borders, dividers

accent

#4F3FE6 rgb(79,63,230) Primary actions, links, focus

success

#278019 rgb(39,128,25) Success states, confirmations

Typography

• MUST use Inter as primary font family

• SHOULD use single font family for consistency

• MUST use 46px / extra_bold for primary headings

• MUST use 14px / 400 for body text

• SHOULD reduce font weights (currently 6 detected)

• MUST use text-balance for headings and text-pretty for body text

• SHOULD use tabular-nums for numeric data

• NEVER modify letter-spacing unless explicitly requested

Text Styles

Style Font Size Weight Color Count

heading-1

Inter 46px extra_bold #E1E0DF 1

text-26px

Inter 26px semi_bold #DFE0E2 1

text-24px

Inter 24px semi_bold #E7E6E5 1

text-18px

Inter 18px 400 #848A92 1

text-16px

Inter 16px 400 #A29E9D 1

text-16px

Inter 16px 400 #827F7F 1

text-15px

Inter 15px 400 #BABDC3 1

text-15px

Inter 15px 400 #9B9BA1 1

text-15px

Inter 15px 400 #818181 1

text-15px

Inter 15px 400 #8F87E8 1

Typography Reference

Font Families:

• Inter (used 72x)

Font Sizes: 6px, 7px, 8px, 9px, 10px, 11px, 12px, 13px, 14px, 15px, 16px, 18px, 24px, 26px, 46px

Spacing

• MUST use 4px grid for spacing

• SHOULD use spacing from scale: 1px, 2px, 3px, 4px, 5px, 6px, 7px, 8px

• SHOULD use 5px as default gap between elements

• NEVER use arbitrary spacing values (use design scale)

• SHOULD maintain consistent padding within containers

Borders

• MUST use border-radius from scale: 3px, 4px, 6px, 7px, 9px, 10px, 13px, 15px, 16px, 18px, 19px

• SHOULD limit border widths to: 1px, 2px, 3px

• SHOULD use 6px as default border-radius

• NEVER use arbitrary border-radius values (use design scale)

• SHOULD use subtle borders (1px) for element separation

Border Radius Reference

Scale: 3px, 4px, 6px, 7px, 9px, 10px, 13px, 15px, 16px, 18px, 19px

Layout

• MUST design for 1920px base viewport width

• SHOULD use consistent element widths: 9px, 8px, 6px, 4px, 20px

• SHOULD maintain text-heavy layout with clear hierarchy

• NEVER use h-screen , use h-dvh for full viewport height

• MUST respect safe-area-inset for fixed elements

• SHOULD use size-* for square elements instead of w-*

• h-*

Detected Layout Patterns

• Header: height: 42px

• Header: height: 88px

• Header: height: 53px

Components

Buttons

Variant Background Text Border Height Radius

Ghost transparent #8492A8 none

Interactive States

Focus

• MUST use 2px outline with accent color (#4F3FE6 )

• MUST use 2px outline-offset

• NEVER remove focus indicators

Hover

• Buttons (primary): lighten background by 10%

• Buttons (secondary): use #110D0C background

• List items: use #110D0C background

Disabled

• MUST use opacity: 0.5

• MUST use cursor: not-allowed

Interaction

• MUST use an AlertDialog for destructive or irreversible actions

• SHOULD use structural skeletons for loading states

• MUST show errors next to where the action happens

• NEVER block paste in input or textarea elements

• MUST add an aria-label to icon-only buttons

Animation

• NEVER add animation unless it is explicitly requested

• MUST animate only compositor props (transform , opacity )

• NEVER animate layout properties (width , height , top , left , margin , padding )

• SHOULD use ease-out on entrance animations

• NEVER exceed 200ms for interaction feedback

• SHOULD respect prefers-reduced-motion

Performance

• NEVER animate large blur() or backdrop-filter surfaces

• NEVER apply will-change outside an active animation

• NEVER use useEffect for anything that can be expressed as render logic