#8D8464

CSS

:root {
  --wilderness: #8d8464;
  --wilderness-rgb: 141 132 100;
  --wilderness-oklch: oklch(0.613 0.047 94.2);
}

.element {
  color: var(--wilderness);
  background-color: hsl(47 17% 47%);
  border-color: oklch(0.613 0.047 94.2);
}

Tailwind CSS v4

@theme {
  --color-wilderness: #8d8464;
  --color-wilderness-50: #f9f5e7;
  --color-wilderness-100: #ece8d7;
  --color-wilderness-200: #dad5be;
  --color-wilderness-300: #beb89d;
  --color-wilderness-400: #a79e7f;
  --color-wilderness-500: #908663;
  --color-wilderness-600: #7a7254;
  --color-wilderness-700: #625b43;
  --color-wilderness-800: #484230;
  --color-wilderness-900: #322e20;
  --color-wilderness-950: #1e1a10;
}

SCSS

$wilderness: #8d8464;
$wilderness-rgb: 141, 132, 100;
$wilderness-light: mix(#fff, $wilderness, 20%);
$wilderness-dark: mix(#000, $wilderness, 20%);

.element {
  color: $wilderness;
  box-shadow: 0 0 0 2px rgba($wilderness, 0.35);
}