#00391F

CSS

:root {
  --lost-in-the-woods: #00391f;
  --lost-in-the-woods-rgb: 0 57 31;
  --lost-in-the-woods-oklch: oklch(0.303 0.073 156.8);
}

.element {
  color: var(--lost-in-the-woods);
  background-color: hsl(153 100% 11%);
  border-color: oklch(0.303 0.073 156.8);
}

Tailwind CSS v4

@theme {
  --color-lost-in-the-woods: #00391f;
  --color-lost-in-the-woods-50: #e5fcee;
  --color-lost-in-the-woods-100: #d5f0df;
  --color-lost-in-the-woods-200: #bbdec9;
  --color-lost-in-the-woods-300: #98c3aa;
  --color-lost-in-the-woods-400: #7bac8d;
  --color-lost-in-the-woods-500: #5c9573;
  --color-lost-in-the-woods-600: #4e7e61;
  --color-lost-in-the-woods-700: #3e654e;
  --color-lost-in-the-woods-800: #2d4a37;
  --color-lost-in-the-woods-900: #1f3326;
  --color-lost-in-the-woods-950: #0e1f14;
}

SCSS

$lost-in-the-woods: #00391f;
$lost-in-the-woods-rgb: 0, 57, 31;
$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);
}