#144700

CSS

:root {
  --woodland-grass: #144700;
  --woodland-grass-rgb: 20 71 0;
  --woodland-grass-oklch: oklch(0.35 0.111 139.2);
}

.element {
  color: var(--woodland-grass);
  background-color: hsl(103 100% 14%);
  border-color: oklch(0.35 0.111 139.2);
}

Tailwind CSS v4

@theme {
  --color-woodland-grass: #144700;
  --color-woodland-grass-50: #e4fee0;
  --color-woodland-grass-100: #d4f2cf;
  --color-woodland-grass-200: #bbe1b5;
  --color-woodland-grass-300: #98c691;
  --color-woodland-grass-400: #7cae6e;
  --color-woodland-grass-500: #5e974e;
  --color-woodland-grass-600: #508042;
  --color-woodland-grass-700: #3f6735;
  --color-woodland-grass-800: #2f4b23;
  --color-woodland-grass-900: #203418;
  --color-woodland-grass-950: #0f1f08;
}

SCSS

$woodland-grass: #144700;
$woodland-grass-rgb: 20, 71, 0;
$woodland-grass-light: mix(#fff, $woodland-grass, 20%);
$woodland-grass-dark: mix(#000, $woodland-grass, 20%);

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