#0A4729

CSS

:root {
  --lost-in-the-woods: #0a4729;
  --lost-in-the-woods-rgb: 10 71 41;
  --lost-in-the-woods-oklch: oklch(0.353 0.079 156);
}

.element {
  color: var(--lost-in-the-woods);
  background-color: hsl(150 75% 16%);
  border-color: oklch(0.353 0.079 156);
}

Tailwind CSS v4

@theme {
  --color-lost-in-the-woods: #0a4729;
  --color-lost-in-the-woods-50: #e3fded;
  --color-lost-in-the-woods-100: #d3f0de;
  --color-lost-in-the-woods-200: #b9dfc8;
  --color-lost-in-the-woods-300: #96c4a8;
  --color-lost-in-the-woods-400: #77ad8b;
  --color-lost-in-the-woods-500: #589670;
  --color-lost-in-the-woods-600: #4b7f5f;
  --color-lost-in-the-woods-700: #3c664c;
  --color-lost-in-the-woods-800: #2b4a36;
  --color-lost-in-the-woods-900: #1d3425;
  --color-lost-in-the-woods-950: #0d1f13;
}

SCSS

$lost-in-the-woods: #0a4729;
$lost-in-the-woods-rgb: 10, 71, 41;
$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);
}