Default Theme

Here's what the theme object looks like with the default values.

Typography-related:

extendTheme({
  fontSize: {
    xs: '0.75rem',
    sm: '0.875rem',
    md: '1rem',
    lg: '1.25rem',
    xl: '1.5rem',
    xl2: '1.875rem',
    xl3: '2.25rem',
    xl4: '3rem',
    xl5: '3.75rem',
    xl6: '4.5rem',
  },
});

extendTheme({
  fontFamily: {
    body: '"Public Sans", var(--joy-fontFamily-fallback)',
    display: '"Public Sans", var(--joy-fontFamily-fallback)',
    code: 'Source Code Pro,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace',
    fallback:
      '-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"',
  },
});

extendTheme({
  fontWeight: {
    xs: 200,
    sm: 300,
    md: 500,
    lg: 700,
    xl: 800,
  },
});

extendTheme({
  lineHeight: {
    sm: 1.25,
    md: 1.5,
    lg: 1.7,
  },
});

extendTheme({
  letterSpacing: {
    sm: '-0.01em',
    md: '0.083em',
    lg: '0.125em',
  },
});

extendTheme({
  radius: {
    xs: '4px',
    sm: '8px',
    md: '12px',
    lg: '16px',
    xl: '20px',
  },
});
}

Box shadows:

All the shadows are listed here. We recommend to use var(--joy-shadowRing) and var(--joy-shadowChannel) for creating the shadows because you can customize the shadow color on the component.

extendTheme({
  shadows: {
    // default tokens
    xs: 'var(--joy-shadowRing), 0 1px 2px 0 rgba(var(--joy-shadowChannel) / 0.12)',
    sm: '...',
    md: '...',
    lg: '...',
    xl: '...',
  },
});