#7B7642

CSS

:root {
  --tree-hugger: #7b7642;
  --tree-hugger-rgb: 123 118 66;
  --tree-hugger-oklch: oklch(0.558 0.072 103.7);
}

.element {
  color: var(--tree-hugger);
  background-color: hsl(55 30% 37%);
  border-color: oklch(0.558 0.072 103.7);
}

Tailwind CSS v4

@theme {
  --color-tree-hugger: #7b7642;
  --color-tree-hugger-50: #f8f7df;
  --color-tree-hugger-100: #ebeace;
  --color-tree-hugger-200: #d8d7b3;
  --color-tree-hugger-300: #bcba8f;
  --color-tree-hugger-400: #a5a16e;
  --color-tree-hugger-500: #8e894e;
  --color-tree-hugger-600: #787443;
  --color-tree-hugger-700: #605c35;
  --color-tree-hugger-800: #474325;
  --color-tree-hugger-900: #312e19;
  --color-tree-hugger-950: #1d1b09;
}

SCSS

$tree-hugger: #7b7642;
$tree-hugger-rgb: 123, 118, 66;
$tree-hugger-light: mix(#fff, $tree-hugger, 20%);
$tree-hugger-dark: mix(#000, $tree-hugger, 20%);

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