#B0967B

CSS

:root {
  --cookie-crumb: #b0967b;
  --cookie-crumb-rgb: 176 150 123;
  --cookie-crumb-oklch: oklch(0.689 0.049 67.9);
}

.element {
  color: var(--cookie-crumb);
  background-color: hsl(31 25% 59%);
  border-color: oklch(0.689 0.049 67.9);
}

Tailwind CSS v4

@theme {
  --color-cookie-crumb: #b0967b;
  --color-cookie-crumb-50: #fff3e6;
  --color-cookie-crumb-100: #f3e5d7;
  --color-cookie-crumb-200: #e2d1be;
  --color-cookie-crumb-300: #c8b49d;
  --color-cookie-crumb-400: #b29a80;
  --color-cookie-crumb-500: #9c8063;
  --color-cookie-crumb-600: #846d54;
  --color-cookie-crumb-700: #6a5743;
  --color-cookie-crumb-800: #4e3f30;
  --color-cookie-crumb-900: #362b21;
  --color-cookie-crumb-950: #211910;
}

SCSS

$cookie-crumb: #b0967b;
$cookie-crumb-rgb: 176, 150, 123;
$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);
}