#AF9779

CSS

:root {
  --cookie-crumb: #af9779;
  --cookie-crumb-rgb: 175 151 121;
  --cookie-crumb-oklch: oklch(0.69 0.051 73);
}

.element {
  color: var(--cookie-crumb);
  background-color: hsl(33 25% 58%);
  border-color: oklch(0.69 0.051 73);
}

Tailwind CSS v4

@theme {
  --color-cookie-crumb: #af9779;
  --color-cookie-crumb-50: #fef3e6;
  --color-cookie-crumb-100: #f2e6d6;
  --color-cookie-crumb-200: #e1d2bd;
  --color-cookie-crumb-300: #c7b49b;
  --color-cookie-crumb-400: #b19a7e;
  --color-cookie-crumb-500: #9b8161;
  --color-cookie-crumb-600: #836e52;
  --color-cookie-crumb-700: #695842;
  --color-cookie-crumb-800: #4e402f;
  --color-cookie-crumb-900: #362c20;
  --color-cookie-crumb-950: #21190f;
}

SCSS

$cookie-crumb: #af9779;
$cookie-crumb-rgb: 175, 151, 121;
$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);
}