#998D6B

CSS

:root {
  --wilderness: #998d6b;
  --wilderness-rgb: 153 141 107;
  --wilderness-oklch: oklch(0.645 0.05 90.9);
}

.element {
  color: var(--wilderness);
  background-color: hsl(44 18% 51%);
  border-color: oklch(0.645 0.05 90.9);
}

Tailwind CSS v4

@theme {
  --color-wilderness: #998d6b;
  --color-wilderness-50: #faf5e5;
  --color-wilderness-100: #ede8d6;
  --color-wilderness-200: #dbd4bd;
  --color-wilderness-300: #c0b79b;
  --color-wilderness-400: #a99e7d;
  --color-wilderness-500: #928560;
  --color-wilderness-600: #7c7152;
  --color-wilderness-700: #635a41;
  --color-wilderness-800: #49422e;
  --color-wilderness-900: #332d1f;
  --color-wilderness-950: #1f1a0f;
}

SCSS

$wilderness: #998d6b;
$wilderness-rgb: 153, 141, 107;
$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);
}