Mem UI Skills

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

When to Apply

Reference these guidelines when:

• Building light-mode interfaces

• Creating Mem-inspired design systems

• Implementing UIs with Inter font and 4px grid

Colors

• SHOULD use light backgrounds for primary surfaces

• MUST use #F9F5ED as page background (surface-base )

• MUST use #95A3DC 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

#F9F5ED rgb(249,245,237) Page background

surface-raised

#EADCC3 rgb(234,220,195) Cards, modals, raised surfaces

text-primary

#474449 rgb(71,68,73) Headings, body text

text-2

#665E53 rgb(102,94,83) Additional text

text-tertiary

#2F2C3D rgb(47,44,61) Additional text

border-default

#534F59 rgb(83,79,89) Subtle borders, dividers

warning

#F9F5ED rgb(249,245,237) Warning states, cautions

accent

#95A3DC rgb(149,163,220) Primary actions, links, focus

Typography

• MUST use Inter as primary font family

• SHOULD use single font family for consistency

• MUST use 86px / 700 for primary headings

• MUST use 20px / 400 for body text

• MUST limit font weights to: regular, bold, semi_bold

• 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 86px 700 #2F2C3D 1

body

Inter 20px 400 #665E53 1

body-secondary

Inter 20px 400 #423E44 1

body-secondary

Inter 19px 400 #474349 1

body-secondary

Inter 19px 400 #514B51 1

body-secondary

Inter 19px 400 #605A60 1

body-secondary

Inter 19px semi_bold #34313F 1

body-secondary

Inter 18px 400 #504B4F 1

body-secondary

Inter 18px 400 #514D53 1

text-16px

Inter 16px 400 #474449 1

Typography Reference

Font Families:

• Inter (used 13x)

Font Sizes: 13px, 14px, 16px, 18px, 19px, 20px, 86px

Spacing

• MUST use 4px grid for spacing

• SHOULD use spacing from scale: 1px, 2px, 4px, 5px, 6px, 8px, 13px, 28px

• 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: 16px, 29px, 32px, 33px, 37px, 39px

• SHOULD use 29px+ radius for pill-shaped elements

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

• SHOULD use 37px 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: 16px, 29px, 32px, 33px, 37px, 39px

Layout

• MUST design for 1920px base viewport width

• SHOULD use consistent element widths: 302px, 304px, 74px

• 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: 937px

• Main Content: width: 1920px, height: 920px

• Header: height: 72px

• Header: height: 71px

Components

Buttons

Variant Background Text Border Height Radius

Ghost transparent #474449 none

Interactive States

Focus

• MUST use 2px outline with accent color (#95A3DC )

• MUST use 2px outline-offset

• NEVER remove focus indicators

Hover

• Buttons (primary): lighten background by 10%

• Buttons (secondary): use #EADCC3 background

• List items: use #EADCC3 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