#AE9A41

CSS

:root {
  --formosan-green: #ae9a41;
  --formosan-green-rgb: 174 154 65;
  --formosan-green-oklch: oklch(0.686 0.111 96.7);
}

.element {
  color: var(--formosan-green);
  background-color: hsl(49 46% 47%);
  border-color: oklch(0.686 0.111 96.7);
}

Tailwind CSS v4

@theme {
  --color-formosan-green: #ae9a41;
  --color-formosan-green-50: #fdf6d2;
  --color-formosan-green-100: #f1e9bf;
  --color-formosan-green-200: #e0d69f;
  --color-formosan-green-300: #c6b975;
  --color-formosan-green-400: #b19e4c;
  --color-formosan-green-500: #9c8514;
  --color-formosan-green-600: #837116;
  --color-formosan-green-700: #695a12;
  --color-formosan-green-800: #4f410a;
  --color-formosan-green-900: #372d06;
  --color-formosan-green-950: #221a00;
}

SCSS

$formosan-green: #ae9a41;
$formosan-green-rgb: 174, 154, 65;
$formosan-green-light: mix(#fff, $formosan-green, 20%);
$formosan-green-dark: mix(#000, $formosan-green, 20%);

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