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Typography

Rott UI provides a responsive typography system with predefined font sizes, families, and weights.

Font Sizes​

Predefined Sizes​

<Label text="Extra Small" fontSize="xs" />   // 10px
<Label text="Small" fontSize="sm" />          // 12px
<Label text="Medium" fontSize="md" />         // 14px (default)
<Label text="Large" fontSize="lg" />          // 16px
<Label text="Extra Large" fontSize="xl" />    // 18px
<Label text="2X Large" fontSize="xxl" />      // 24px
<Label text="3X Large" fontSize="xxxl" />     // 36px

Responsive Sizing​

Font sizes automatically adjust for small screens (< 380px width):

SizeNormalSmall Screen
xs10px8px
sm12px10px
md14px12px
lg16px14px
xl18px16px
xxl24px22px
xxxl36px34px

Configured font-size tokens​

fontSize also accepts any token defined in your rott.config.ts fontSizes map (for example 2xl, 3xl, or your own custom keys), plus any numeric value. Tokens you define there resolve at runtime, and overriding a built-in key (e.g. md) in fontSizes updates it everywhere Label is used. Built-in keys keep their responsive small-screen sizing.

Custom Font Sizes​

Override at component level:

<Label text="Custom Size" style={{ fontSize: 20 }} />

Font Families​

Default Fonts​

Rott UI uses the Markpro font family by default:

  • MarkproRegular - Regular weight
  • MarkproBold - Bold weight
  • MarkproMedium - Medium weight
  • MarkproLight - Light weight

Using Font Families​

<Label text="Regular" fontFamily="MarkproRegular" />
<Label text="Bold" fontFamily="MarkproBold" />
<Label text="Medium" fontFamily="MarkproMedium" />

Custom Fonts​

Add custom fonts via rott.config.ts:

rott.config.ts
export const config = defineRottConfig({
  fontFamilies: {
    regular: 'Inter-Regular',
    medium: 'Inter-Medium',
    bold: 'Inter-Bold',
    light: 'Inter-Light',
  },
} as const);

Font Weights​

Using Font Weight​

<Label text="Regular" fontWeight="regular" />
<Label text="Medium" fontWeight="medium" />
<Label text="Bold" fontWeight="bold" />
<Label text="Light" fontWeight="light" />

Font Weight Mapping​

Font weights automatically map to font families:

fontWeights: {
  regular: 'MarkproRegular',
  medium: 'MarkproMedium',
  bold: 'MarkproBold',
  light: 'MarkproLight',
}

Typography Scale​

Headings​

<Label text="H1 Heading" fontSize="xxxl" fontWeight="bold" />
<Label text="H2 Heading" fontSize="xxl" fontWeight="bold" />
<Label text="H3 Heading" fontSize="xl" fontWeight="bold" />
<Label text="H4 Heading" fontSize="lg" fontWeight="bold" />

Body Text​

<Label text="Body Large" fontSize="lg" />
<Label text="Body Medium" fontSize="md" />
<Label text="Body Small" fontSize="sm" />

Captions​

<Label text="Caption" fontSize="xs" variant="grey-800" />

Letter Spacing​

Add custom letter spacing:

<Label text="Tight" letterSpacing={-0.5} />
<Label text="Normal" letterSpacing={0} />
<Label text="Wide" letterSpacing={2} />

Text Styles​

Emphasis​

<Label text="Bold Text" fontWeight="bold" />
<Label text="Medium Text" fontWeight="medium" />
<Label text="Light Text" fontWeight="light" />

Alignment​

<Label text="Left" textAlign="left" />
<Label text="Center" textCenter />
<Label text="Right" textAlign="right" />

Truncation​

<Label 
  text="Long text that will be truncated with ellipsis"
  numberOfLines={1}
/>

Typography in Components​

Button​

<Button fontSize="lg" fontWeight="bold">
  Large Bold Button
</Button>

Input​

<Input
  name="email"
  label={{
    text: "Email",
    fontSize: "lg",
    fontWeight: "bold",
  }}
/>

Best Practices​

Do's ✅​

  • Use the predefined font scale for consistency
  • Use semantic sizes (lg for headings, md for body)
  • Test typography on different screen sizes
  • Ensure readable line heights

Don'ts ❌​

  • Don't use too many font sizes on one screen
  • Don't use extreme letter spacing
  • Don't mix too many font families
  • Don't forget to test on small devices

Accessibility​

  • Minimum font size: 12px for body text
  • Sufficient line height: 1.5 for body text
  • Clear hierarchy with size and weight
  • Good contrast ratios

Next Steps​