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tldraw-ui-skills

Original：🇺🇸 English

Translated

Tldraw's UI design system. Use when building interfaces inspired by Tldraw's aesthetic - light mode, Inter font, 4px grid.

1installs

Sourceihlamury/design-skills

Added on2026-02-07

NPX Install

npx skill4agent add ihlamury/design-skills tldraw-ui-skills

Tags

Translated version includes tags in frontmatter

tldraw-ui ui-design-system interface-guidelines typography-standards spacing-specs

SKILL.md Content

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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:

```
Inter
```
(used 9x)

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