#B39577

CSS

:root {
  --cookie-crumb: #b39577;
  --cookie-crumb-rgb: 179 149 119;
  --cookie-crumb-oklch: oklch(0.689 0.055 66.7);
}

.element {
  color: var(--cookie-crumb);
  background-color: hsl(30 28% 58%);
  border-color: oklch(0.689 0.055 66.7);
}

Tailwind CSS v4

@theme {
  --color-cookie-crumb: #b39577;
  --color-cookie-crumb-50: #fff3e5;
  --color-cookie-crumb-100: #f5e5d5;
  --color-cookie-crumb-200: #e4d1bc;
  --color-cookie-crumb-300: #cbb39a;
  --color-cookie-crumb-400: #b5997c;
  --color-cookie-crumb-500: #9f7f5f;
  --color-cookie-crumb-600: #876c51;
  --color-cookie-crumb-700: #6c5640;
  --color-cookie-crumb-800: #503f2e;
  --color-cookie-crumb-900: #382b1f;
  --color-cookie-crumb-950: #22180f;
}

SCSS

$cookie-crumb: #b39577;
$cookie-crumb-rgb: 179, 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);
}