Convertkit UI Skills
Opinionated constraints for building Convertkit-style interfaces with AI agents.
When to Apply
Reference these guidelines when:
- •Building light-mode interfaces
- •Creating Convertkit-inspired design systems
- •Implementing UIs with Inter font and 4px grid
Colors
- •SHOULD use light backgrounds for primary surfaces
- •MUST use
#FFFFFFas page background (surface-base) - •MUST use
#194775for primary actions and focus states (accent) - •SHOULD reduce color palette (currently 18 colors detected)
- •MUST maintain text contrast ratio of at least 4.5:1 for accessibility
Semantic Tokens
| Token | HEX | RGB | Usage |
|---|---|---|---|
surface-base | #FFFFFF | rgb(255,255,255) | Page background |
surface-raised | #EEE9E4 | rgb(238,233,228) | Cards, modals, raised surfaces |
surface-overlay | #379EFD | rgb(55,158,253) | Overlays, tooltips, dropdowns |
text-primary | #6C6C6C | rgb(108,108,108) | Headings, body text |
text-secondary | #8C8B91 | rgb(140,139,145) | Secondary, muted text |
text-tertiary | #4B4855 | rgb(75,72,85) | Additional text |
border-default | #EFFEFE | rgb(239,254,254) | Subtle borders, dividers |
accent | #194775 | rgb(25,71,117) | Primary actions, links, focus |
Typography
- •MUST use
Interas primary font family - •SHOULD use single font family for consistency
- •MUST use
75px/700for primary headings - •MUST use
29px/semi_boldfor body text - •SHOULD reduce font weights (currently 5 detected)
- •MUST use
text-balancefor headings andtext-prettyfor body text - •SHOULD use
tabular-numsfor numeric data - •NEVER modify letter-spacing unless explicitly requested
Text Styles
| Style | Font | Size | Weight | Color | Count |
|---|---|---|---|---|---|
heading-1 | Inter | 75px | 700 | #242221 | 1 |
body | Inter | 29px | semi_bold | #4B4855 | 1 |
text-24px | Inter | 24px | 700 | #292929 | 1 |
text-17px | Inter | 17px | 400 | #6D6864 | 1 |
text-16px | Inter | 16px | 400 | #66625E | 1 |
text-15px | Inter | 15px | 400 | #9DA1A5 | 1 |
text-15px | Inter | 15px | 500 | #CED2D4 | 1 |
text-15px | Inter | 15px | 500 | #4A4744 | 1 |
text-15px | Inter | 15px | 500 | #4D4A47 | 1 |
text-14px | Inter | 14px | 400 | #8C8B91 | 1 |
Typography Reference
Font Families:
- •
Inter(used 35x)
Font Sizes: 11px, 12px, 13px, 14px, 15px, 16px, 17px, 24px, 29px, 75px
Spacing
- •MUST use 4px grid for spacing
- •SHOULD use spacing from scale: 1px, 2px, 3px, 4px, 5px, 6px, 7px, 8px
- •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: 3px, 4px, 6px, 7px, 9px, 10px
- •SHOULD limit border widths to: 1px, 2px
- •SHOULD use 7px 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: 3px, 4px, 6px, 7px, 9px, 10px
Layout
- •MUST design for 1920px base viewport width
- •SHOULD use consistent element widths: 44px, 10px, 335px, 107px, 142px
- •SHOULD maintain text-heavy layout with clear hierarchy
- •NEVER use
h-screen, useh-dvhfor full viewport height - •MUST respect
safe-area-insetfor fixed elements - •SHOULD use
size-*for square elements instead ofw-*+h-*
Detected Layout Patterns
- •Header: height: 58px
Components
Buttons
| Variant | Background | Text | Border | Height | Radius |
|---|---|---|---|---|---|
| Ghost | transparent | #5B5B5B | none | - | - |
Interactive States
Focus
- •MUST use
2pxoutline with accent color (#194775) - •MUST use
2pxoutline-offset - •NEVER remove focus indicators
Hover
- •Buttons (primary): lighten background by 10%
- •Buttons (secondary): use
#EEE9E4background - •List items: use
#EEE9E4background
Disabled
- •MUST use
opacity: 0.5 - •MUST use
cursor: not-allowed
Interaction
- •MUST use an
AlertDialogfor destructive or irreversible actions - •SHOULD use structural skeletons for loading states
- •MUST show errors next to where the action happens
- •NEVER block paste in
inputortextareaelements - •MUST add an
aria-labelto 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-outon entrance animations - •NEVER exceed
200msfor interaction feedback - •SHOULD respect
prefers-reduced-motion
Performance
- •NEVER animate large
blur()orbackdrop-filtersurfaces - •NEVER apply
will-changeoutside an active animation - •NEVER use
useEffectfor anything that can be expressed as render logic