#B19673

CSS

:root {
  --cookie-crumb: #b19673;
  --cookie-crumb-rgb: 177 150 115;
  --cookie-crumb-oklch: oklch(0.689 0.058 73.8);
}

.element {
  color: var(--cookie-crumb);
  background-color: hsl(34 28% 57%);
  border-color: oklch(0.689 0.058 73.8);
}

Tailwind CSS v4

@theme {
  --color-cookie-crumb: #b19673;
  --color-cookie-crumb-50: #fff3e3;
  --color-cookie-crumb-100: #f3e6d3;
  --color-cookie-crumb-200: #e3d1b9;
  --color-cookie-crumb-300: #c9b497;
  --color-cookie-crumb-400: #b49a79;
  --color-cookie-crumb-500: #9e815b;
  --color-cookie-crumb-600: #856d4d;
  --color-cookie-crumb-700: #6b573d;
  --color-cookie-crumb-800: #4f3f2c;
  --color-cookie-crumb-900: #372c1e;
  --color-cookie-crumb-950: #22190e;
}

SCSS

$cookie-crumb: #b19673;
$cookie-crumb-rgb: 177, 150, 115;
$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);
}