#003F26

CSS

:root {
  --lost-in-the-woods: #003f26;
  --lost-in-the-woods-rgb: 0 63 38;
  --lost-in-the-woods-oklch: oklch(0.324 0.074 159.5);
}

.element {
  color: var(--lost-in-the-woods);
  background-color: hsl(156 100% 12%);
  border-color: oklch(0.324 0.074 159.5);
}

Tailwind CSS v4

@theme {
  --color-lost-in-the-woods: #003f26;
  --color-lost-in-the-woods-50: #e4fcef;
  --color-lost-in-the-woods-100: #d3f0e0;
  --color-lost-in-the-woods-200: #b9dfca;
  --color-lost-in-the-woods-300: #96c4ac;
  --color-lost-in-the-woods-400: #78ac8f;
  --color-lost-in-the-woods-500: #589575;
  --color-lost-in-the-woods-600: #4b7e63;
  --color-lost-in-the-woods-700: #3c654f;
  --color-lost-in-the-woods-800: #2c4a38;
  --color-lost-in-the-woods-900: #1d3427;
  --color-lost-in-the-woods-950: #0d1f15;
}

SCSS

$lost-in-the-woods: #003f26;
$lost-in-the-woods-rgb: 0, 63, 38;
$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);
}