#B49577

CSS

:root {
  --cookie-crumb: #b49577;
  --cookie-crumb-rgb: 180 149 119;
  --cookie-crumb-oklch: oklch(0.69 0.056 65.7);
}

.element {
  color: var(--cookie-crumb);
  background-color: hsl(30 29% 59%);
  border-color: oklch(0.69 0.056 65.7);
}

Tailwind CSS v4

@theme {
  --color-cookie-crumb: #b49577;
  --color-cookie-crumb-50: #fff3e5;
  --color-cookie-crumb-100: #f5e5d5;
  --color-cookie-crumb-200: #e5d0bb;
  --color-cookie-crumb-300: #cbb399;
  --color-cookie-crumb-400: #b6987c;
  --color-cookie-crumb-500: #a07f5e;
  --color-cookie-crumb-600: #876c50;
  --color-cookie-crumb-700: #6c5640;
  --color-cookie-crumb-800: #503e2e;
  --color-cookie-crumb-900: #382b1f;
  --color-cookie-crumb-950: #22180f;
}

SCSS

$cookie-crumb: #b49577;
$cookie-crumb-rgb: 180, 149, 119;
$cookie-crumb-light: mix(#fff, $cookie-crumb, 20%);
$cookie-crumb-dark: mix(#000, $cookie-crumb, 20%);

.element {
  color: $cookie-crumb;
  box-shadow: 0 0 0 2px rgba($cookie-crumb, 0.35);
}