#004324

CSS

:root {
  --lost-in-the-woods: #004324;
  --lost-in-the-woods-rgb: 0 67 36;
  --lost-in-the-woods-oklch: oklch(0.337 0.082 155.7);
}

.element {
  color: var(--lost-in-the-woods);
  background-color: hsl(152 100% 13%);
  border-color: oklch(0.337 0.082 155.7);
}

Tailwind CSS v4

@theme {
  --color-lost-in-the-woods: #004324;
  --color-lost-in-the-woods-50: #e3fdec;
  --color-lost-in-the-woods-100: #d2f1dd;
  --color-lost-in-the-woods-200: #b8dfc7;
  --color-lost-in-the-woods-300: #95c5a7;
  --color-lost-in-the-woods-400: #76ad8a;
  --color-lost-in-the-woods-500: #56966f;
  --color-lost-in-the-woods-600: #497f5e;
  --color-lost-in-the-woods-700: #3a664b;
  --color-lost-in-the-woods-800: #2b4b35;
  --color-lost-in-the-woods-900: #1d3424;
  --color-lost-in-the-woods-950: #0c1f13;
}

SCSS

$lost-in-the-woods: #004324;
$lost-in-the-woods-rgb: 0, 67, 36;
$lost-in-the-woods-light: mix(#fff, $lost-in-the-woods, 20%);
$lost-in-the-woods-dark: mix(#000, $lost-in-the-woods, 20%);

.element {
  color: $lost-in-the-woods;
  box-shadow: 0 0 0 2px rgba($lost-in-the-woods, 0.35);
}