#B09678

CSS

:root {
  --cookie-crumb: #b09678;
  --cookie-crumb-rgb: 176 150 120;
  --cookie-crumb-oklch: oklch(0.689 0.052 70.8);
}

.element {
  color: var(--cookie-crumb);
  background-color: hsl(32 26% 58%);
  border-color: oklch(0.689 0.052 70.8);
}

Tailwind CSS v4

@theme {
  --color-cookie-crumb: #b09678;
  --color-cookie-crumb-50: #fff3e5;
  --color-cookie-crumb-100: #f3e6d5;
  --color-cookie-crumb-200: #e2d1bc;
  --color-cookie-crumb-300: #c8b49b;
  --color-cookie-crumb-400: #b39a7d;
  --color-cookie-crumb-500: #9d8160;
  --color-cookie-crumb-600: #846d52;
  --color-cookie-crumb-700: #6a5741;
  --color-cookie-crumb-800: #4e3f2f;
  --color-cookie-crumb-900: #372c20;
  --color-cookie-crumb-950: #21190f;
}

SCSS

$cookie-crumb: #b09678;
$cookie-crumb-rgb: 176, 150, 120;
$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);
}