#0E3D23

CSS

:root {
  --lost-in-the-woods: #0e3d23;
  --lost-in-the-woods-rgb: 14 61 35;
  --lost-in-the-woods-oklch: oklch(0.321 0.068 154.9);
}

.element {
  color: var(--lost-in-the-woods);
  background-color: hsl(147 63% 15%);
  border-color: oklch(0.321 0.068 154.9);
}

Tailwind CSS v4

@theme {
  --color-lost-in-the-woods: #0e3d23;
  --color-lost-in-the-woods-50: #e6fbed;
  --color-lost-in-the-woods-100: #d6efdf;
  --color-lost-in-the-woods-200: #bddec9;
  --color-lost-in-the-woods-300: #9bc2a9;
  --color-lost-in-the-woods-400: #7eab8d;
  --color-lost-in-the-woods-500: #609472;
  --color-lost-in-the-woods-600: #527d61;
  --color-lost-in-the-woods-700: #41644d;
  --color-lost-in-the-woods-800: #304937;
  --color-lost-in-the-woods-900: #203326;
  --color-lost-in-the-woods-950: #101f14;
}

SCSS

$lost-in-the-woods: #0e3d23;
$lost-in-the-woods-rgb: 14, 61, 35;
$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);
}