#002E1A

CSS

:root {
  --pitch-black-forests: #002e1a;
  --pitch-black-forests-rgb: 0 46 26;
  --pitch-black-forests-oklch: oklch(0.265 0.061 158.9);
}

.element {
  color: var(--pitch-black-forests);
  background-color: hsl(154 100% 9%);
  border-color: oklch(0.265 0.061 158.9);
}

Tailwind CSS v4

@theme {
  --color-pitch-black-forests: #002e1a;
  --color-pitch-black-forests-50: #e7fbef;
  --color-pitch-black-forests-100: #d7efe1;
  --color-pitch-black-forests-200: #beddcc;
  --color-pitch-black-forests-300: #9dc2ad;
  --color-pitch-black-forests-400: #80aa91;
  --color-pitch-black-forests-500: #629377;
  --color-pitch-black-forests-600: #547c65;
  --color-pitch-black-forests-700: #436351;
  --color-pitch-black-forests-800: #30493a;
  --color-pitch-black-forests-900: #213328;
  --color-pitch-black-forests-950: #101e16;
}

SCSS

$pitch-black-forests: #002e1a;
$pitch-black-forests-rgb: 0, 46, 26;
$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);
}