| name | tldraw-ui-skills |
| description | Tldraw's UI design system. Use when building interfaces inspired by Tldraw's aesthetic - light mode, Inter font, 4px grid. |
| license | MIT |
| metadata | {"author":"design-skills","version":"1.0.0","source":"https://tldraw.com"} |
Tldraw UI Skills
Opinionated constraints for building Tldraw-style interfaces with AI agents.
When to Apply
Reference these guidelines when:
- Building light-mode interfaces
- Creating Tldraw-inspired design systems
- Implementing UIs with Inter font and 4px grid
Colors
- SHOULD use light backgrounds for primary surfaces
- MUST use
#E7EBEE as page background (surface-base)
- MUST use
#0E54F0 for primary actions and focus states (accent)
- SHOULD limit color palette to 9 distinct colors
- MUST maintain text contrast ratio of at least 4.5:1 for accessibility
Semantic Tokens
| Token | HEX | RGB | Usage |
|---|
surface-base | #E7EBEE | rgb(231,235,238) | Page background |
surface-raised | #F8F9FB | rgb(248,249,251) | Cards, modals, raised surfaces |
surface-overlay | #0E54F0 | rgb(14,84,240) | Overlays, tooltips, dropdowns |
text-primary | #A3A4A6 | rgb(163,164,166) | Headings, body text |
text-secondary | #64686B | rgb(100,104,107) | Secondary, muted text |
text-tertiary | #535353 | rgb(83,83,83) | Additional text |
border-default | #CBCCCE | rgb(203,204,206) | Subtle borders, dividers |
accent | #0E54F0 | rgb(14,84,240) | Primary actions, links, focus |
Typography
- MUST use
Inter as primary font family
- SHOULD use single font family for consistency
- MUST use
14px / 500 for primary headings
- MUST use
12px / 400 for body text
- MUST limit font weights to: regular, medium
- 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 | 14px | 500 | #5C5C5C | 1 |
heading-2 | Inter | 13px | 500 | #4E4F51 | 1 |
heading-3 | Inter | 12px | 500 | #6A6A6A | 1 |
body | Inter | 12px | 400 | #535353 | 1 |
body-secondary | Inter | 12px | 400 | #616161 | 1 |
body-secondary | Inter | 12px | 400 | #96C4F4 | 1 |
text-10px | Inter | 10px | 400 | #A3A4A6 | 1 |
caption | Inter | 9px | 400 | #64686B | 1 |
label | Inter | 7px | 400 | #A6A7A9 | 1 |
Typography Reference
Font Families:
Font Sizes: 7px, 9px, 10px, 12px, 13px, 14px
Spacing
- MUST use 4px grid for spacing
- SHOULD use spacing from scale: 1px, 2px, 3px, 4px, 5px, 6px, 18px, 22px
- SHOULD use 2px 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: 0px, 3px, 4px, 6px, 7px, 9px
- MUST use 1px border width consistently
- 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: 0px, 3px, 4px, 6px, 7px, 9px
Layout
- MUST design for 1920px base viewport width
- SHOULD use consistent element widths: 16px, 12px, 96px, 13px, 32px
- 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
- Main Content: width: 1920px, height: 965px
- Main Content: width: 1920px, height: 593px
Components
Buttons
| Variant | Background | Text | Border | Height | Radius |
|---|
| Ghost | transparent | #A3A4A6 | none | - | - |
Interactive States
Focus
- MUST use
2px outline with accent color (#0E54F0)
- MUST use
2px outline-offset
- NEVER remove focus indicators
Hover
- Buttons (primary): lighten background by 10%
- Buttons (secondary): use
#F8F9FB background
- List items: use
#F8F9FB 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