Colors

The tokens the docs UI reads, and the theme used on this site.

These are the tokens the docs layout reads.

TokenWhere it shows
--background, --foregroundPage background and text
--muted, --muted-foregroundHover states, quotes, captions, secondary text
--borderHeader border, table rules, code block edges
--primaryLink hover color
--popover, --popover-foregroundThe mobile nav drawer
--docs-navSidebar link color
--code, --code-foreground, --code-borderFenced code blocks
--inline-code, --inline-code-foreground, --inline-code-borderInline code
--radiusBase corner radius, everything else scales from it

This site

The theme you are looking at is borrowed from Flexoki.

/* Flexoki (stephango.com/flexoki) */
@import "@fontsource-variable/outfit";
@import "@fontsource-variable/fira-code";

:root {
  --font-sans:
    "Outfit Variable", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, Menlo, monospace;
  --radius: 0.375rem;

  --background: #fffcf0; /* paper */
  --foreground: #100f0f; /* black */
  --muted: #f2f0e5; /* base-50 */
  --muted-foreground: #6f6e69; /* base-600 */
  --border: #e6e4d9; /* base-100 */
  --primary: #bc5215; /* orange-600 */
  --primary-foreground: #fffcf0;
  --popover: #fffcf0;
  --popover-foreground: #100f0f;

  --code: #1c1b1a; /* base-950 */
  --code-foreground: #cecdc3; /* base-200 */
  --code-border: #282726; /* base-900 */
  --inline-code: #e6e4d9; /* base-100 */
  --inline-code-foreground: #100f0f;
  --inline-code-border: #dad8ce; /* base-150 */
  --docs-nav: #6f6e69;
}

.dark:root {
  --background: #100f0f; /* black */
  --foreground: #cecdc3; /* base-200 */
  --muted: #1c1b1a; /* base-950 */
  --muted-foreground: #878580; /* base-500 */
  --border: #282726; /* base-900 */
  --primary: #da702c; /* orange-400 */
  --primary-foreground: #100f0f;
  --popover: #1c1b1a;
  --popover-foreground: #cecdc3;

  --code: #1c1b1a;
  --code-foreground: #cecdc3;
  --code-border: #282726;
  --inline-code: #282726; /* base-900 */
  --inline-code-foreground: #cecdc3;
  --inline-code-border: #343331; /* base-850 */
  --docs-nav: #878580;
}

Toggle the theme in the header to see both halves.