AgentSkillsCN

replit-ui-skills

Replit 的 UI 设计系统。在构建受 Replit 美学启发的界面时使用——浅色模式、Inter 字体、4px 网格。

SKILL.md
--- frontmatter
name: replit-ui-skills
description: Replit's UI design system. Use when building interfaces inspired by Replit's aesthetic - light mode, Inter font, 4px grid.
license: MIT
metadata:
  author: design-skills
  version: "1.0.0"
  source: https://replit.com

Replit UI Skills

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

When to Apply

Reference these guidelines when:

  • •Building light-mode interfaces
  • •Creating Replit-inspired design systems
  • •Implementing UIs with Inter font and 4px grid

Colors

  • •SHOULD use light backgrounds for primary surfaces
  • •MUST use #F8F8F8 as page background (surface-base)
  • •MUST use #9266E6 for primary actions and focus states (accent)
  • •SHOULD reduce color palette (currently 26 colors detected)
  • •MUST maintain text contrast ratio of at least 4.5:1 for accessibility

Semantic Tokens

TokenHEXRGBUsage
surface-base#F8F8F8rgb(248,248,248)Page background
surface-raised#1C4B39rgb(28,75,57)Cards, modals, raised surfaces
surface-overlay#E1EAE7rgb(225,234,231)Overlays, tooltips, dropdowns
text-primary#769E8Ergb(118,158,142)Headings, body text
text-secondary#8F9A96rgb(143,154,150)Secondary, muted text
text-tertiary#BBBFBBrgb(187,191,187)Additional text
border-default#EEEEEErgb(238,238,238)Subtle borders, dividers
accent#9266E6rgb(146,102,230)Primary actions, links, focus
destructive#DE4409rgb(222,68,9)Error states, delete actions

Typography

  • •MUST use Inter as primary font family
  • •SHOULD use single font family for consistency
  • •MUST use 31px / semi_bold for primary headings
  • •MUST use 13px / 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

StyleFontSizeWeightColorCount
heading-1Inter31pxsemi_bold#3D3D3D1
heading-2Inter30px500#434B461
text-22pxInter22px500#5151521
text-18pxInter18px500#3333331
text-15pxInter15px400#A7A7AA1
text-14pxInter14px400#6D6F6E1
text-14pxInter14px300#6163621
text-14pxInter14px400#9091941
text-14pxInter14px300#7A7A7B1
text-14pxInter14px400#7575751

Typography Reference

Font Families:

  • •Inter (used 64x)

Font Sizes: 3px, 4px, 5px, 6px, 7px, 8px, 11px, 13px, 14px, 15px, 18px, 22px, 30px, 31px

Spacing

  • •MUST use 4px grid for spacing
  • •SHOULD use spacing from scale: 1px, 2px, 3px, 4px, 5px, 8px, 12px, 13px
  • •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, 1px, 2px, 3px, 4px, 5px, 6px, 7px, 9px, 10px, 13px, 15px, 16px, 18px, 45px
  • •SHOULD use 45px+ radius for pill-shaped elements
  • •MUST use 1px border width consistently
  • •SHOULD use 3px 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, 1px, 2px, 3px, 4px, 5px, 6px, 7px, 9px, 10px, 13px, 15px, 16px, 18px, 45px

Layout

  • •MUST design for 1920px base viewport width
  • •SHOULD use consistent element widths: 14px, 6px, 10px, 4px, 21px
  • •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-*

Components

Buttons

VariantBackgroundTextBorderHeightRadius
Ghosttransparent#769E8Enone--

Interactive States

Focus

  • •MUST use 2px outline with accent color (#9266E6)
  • •MUST use 2px outline-offset
  • •NEVER remove focus indicators

Hover

  • •Buttons (primary): lighten background by 10%
  • •Buttons (secondary): use #1C4B39 background
  • •List items: use #1C4B39 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