The platform automatically generates a set of CSS custom properties from the four palette colours defined in Site styles. These variables are injected as :root properties at runtime alongside the base palette. They provide accessible, consistent colour tokens for theme development and are computed with WCAG AA compliance in mind (4.5:1 contrast for normal text, 3:1 for large text and UI elements such as borders).
Colour scales
Four 11-step colour scales (50–950) are generated using the OKLCH colour space for perceptually uniform steps. Each scale is derived from a single source colour.
Scale
Source
Example variable
Brand
Primary colour
--brand-50 through --brand-950
Accent
Secondary colour
--accent-50 through --accent-950
Neutral
Site background colour
--neutral-50 through --neutral-950
Error
Fixed (#dc2626)
--error-50 through --error-950
Steps run from lightest (50) to darkest (950).
Semantic tokens — Text
Variable
Description
--text-default
Default body text colour (creator’s site text colour)
--text-muted
Subdued text; meets 4.5:1 contrast, never more prominent than default
--text-inverse
Text for use on inverse (dark/light-flipped) backgrounds; 4.5:1
--text-on-brand
Text on primary-coloured surfaces; white or brand-950, whichever has higher contrast
--text-on-accent
Text on secondary-coloured surfaces; white or accent-950
--text-on-neutral
Text on body background; white or neutral-950
Semantic tokens — Backgrounds
Variable
Description
--background-default
Page background (creator’s site background colour)
--background-muted
Subtle tinted background for secondary surfaces
--background-inverse
Inverse background (same as default text colour)
Semantic tokens — Borders
Variable
Description
--border-muted
Subtle/decorative border
--border-brand-accessible
Accessible border from brand scale; 3:1
--border-neutral-accessible
Standard accessible border from neutral scale; 3:1
--border-accent-accessible
Accessible border from accent scale; 3:1
Semantic tokens — Surfaces and errors
Variable
Description
--surface-primary
Card/modal backgrounds
--surface-elevated
Elevated surface (e.g. dropdowns, popovers)
--error-text
Error message text; 4.5:1 contrast
--error-background
Error background/highlight
Usage example
Reference these tokens in your theme CSS instead of hard-coded colours so that colours stay consistent and accessible when Creators change their palette.