#003E2D

CSS

:root {
  --pitch-black-forests: #003e2d;
  --pitch-black-forests-rgb: 0 62 45;
  --pitch-black-forests-oklch: oklch(0.323 0.066 167.9);
}

.element {
  color: var(--pitch-black-forests);
  background-color: hsl(164 100% 12%);
  border-color: oklch(0.323 0.066 167.9);
}

Tailwind CSS v4

@theme {
  --color-pitch-black-forests: #003e2d;
  --color-pitch-black-forests-50: #e4fcf2;
  --color-pitch-black-forests-100: #d4efe4;
  --color-pitch-black-forests-200: #baded0;
  --color-pitch-black-forests-300: #97c3b2;
  --color-pitch-black-forests-400: #78ab97;
  --color-pitch-black-forests-500: #58947e;
  --color-pitch-black-forests-600: #4b7d6a;
  --color-pitch-black-forests-700: #3c6455;
  --color-pitch-black-forests-800: #2b4a3d;
  --color-pitch-black-forests-900: #1d332a;
  --color-pitch-black-forests-950: #0d1f18;
}

SCSS

$pitch-black-forests: #003e2d;
$pitch-black-forests-rgb: 0, 62, 45;
$pitch-black-forests-light: mix(#fff, $pitch-black-forests, 20%);
$pitch-black-forests-dark: mix(#000, $pitch-black-forests, 20%);

.element {
  color: $pitch-black-forests;
  box-shadow: 0 0 0 2px rgba($pitch-black-forests, 0.35);
}