Plaid UI Skills

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

When to Apply

Reference these guidelines when:

• Building dark-mode interfaces

• Creating Plaid-inspired design systems

• Implementing UIs with Inter font and 4px grid

Colors

• MUST use dark backgrounds (lightness < 20) for primary surfaces - detected lightness: 11

• MUST use #1B1B1B as page background (surface-base )

• MUST use #7FB4D5 for primary actions and focus states (accent )

• SHOULD reduce color palette (currently 17 colors detected)

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

Semantic Tokens

Token HEX RGB Usage

surface-base

#1B1B1B rgb(27,27,27) Page background

surface-raised

#1376C1 rgb(19,118,193) Cards, modals, raised surfaces

surface-overlay

#A6C5D9 rgb(166,197,217) Overlays, tooltips, dropdowns

text-primary

#40645C rgb(64,100,92) Headings, body text

text-secondary

#2D4B49 rgb(45,75,73) Secondary, muted text

text-tertiary

#9E9E9F rgb(158,158,159) Additional text

border-default

#373D3E rgb(55,61,62) Subtle borders, dividers

accent

#7FB4D5 rgb(127,180,213) Primary actions, links, focus

Typography

• MUST use Inter as primary font family

• SHOULD use single font family for consistency

• MUST use 72px / 700 for primary headings

• MUST use 23px / 400 for body text

• SHOULD reduce font weights (currently 4 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 72px 700 #7CD5B9 1

body

Inter 23px 400 #BDE4F1 1

text-19px

Inter 19px 500 #2D4B49 1

text-19px

Inter 19px 500 #93CAE6 1

text-19px

Inter 19px 400 #D1D1D1 1

text-17px

Inter 17px 400 #7FB4D5 1

text-16px

Inter 16px 500 #83BEE0 1

text-15px

Inter 15px 400 #35615B 1

text-15px

Inter 15px 400 #374D5A 1

text-14px

Inter 14px 400 #364854 1

Typography Reference

Font Families:

• Inter (used 20x)

Font Sizes: 7px, 11px, 12px, 13px, 14px, 15px, 16px, 17px, 19px, 23px, 72px

Spacing

• MUST use 4px grid for spacing

• SHOULD use spacing from scale: 3px, 4px, 5px, 6px, 11px, 41px

• 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: 18px, 19px, 26px, 32px

• SHOULD use 26px+ radius for pill-shaped elements

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

• SHOULD use 26px 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: 18px, 19px, 26px, 32px

Layout

• MUST design for 1920px base viewport width

• SHOULD use consistent element widths: 5px, 6px, 24px, 77px, 210px

• 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

• Main Content: width: 1920px, height: 1080px

• Main Content: width: 1920px, height: 874px

Components

Buttons

Variant Background Text Border Height Radius

Ghost transparent #D1D1D1 none

Interactive States

Focus

• MUST use 2px outline with accent color (#7FB4D5 )

• MUST use 2px outline-offset

• NEVER remove focus indicators

Hover

• Buttons (primary): lighten background by 10%

• Buttons (secondary): use #1376C1 background

• List items: use #1376C1 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