#AB9B4D

CSS

:root {
  --formosan-green: #ab9b4d;
  --formosan-green-rgb: 171 155 77;
  --formosan-green-oklch: oklch(0.687 0.101 97.9);
}

.element {
  color: var(--formosan-green);
  background-color: hsl(50 38% 49%);
  border-color: oklch(0.687 0.101 97.9);
}

Tailwind CSS v4

@theme {
  --color-formosan-green: #ab9b4d;
  --color-formosan-green-50: #fbf6d6;
  --color-formosan-green-100: #efe9c3;
  --color-formosan-green-200: #ded6a4;
  --color-formosan-green-300: #c3b97c;
  --color-formosan-green-400: #ae9f56;
  --color-formosan-green-500: #98862b;
  --color-formosan-green-600: #817226;
  --color-formosan-green-700: #675b1f;
  --color-formosan-green-800: #4d4213;
  --color-formosan-green-900: #352e0c;
  --color-formosan-green-950: #211a01;
}

SCSS

$formosan-green: #ab9b4d;
$formosan-green-rgb: 171, 155, 77;
$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);
}