#132F1C

CSS

:root {
  --pitch-black-forests: #132f1c;
  --pitch-black-forests-rgb: 19 47 28;
  --pitch-black-forests-oklch: oklch(0.277 0.049 152.4);
}

.element {
  color: var(--pitch-black-forests);
  background-color: hsl(139 42% 13%);
  border-color: oklch(0.277 0.049 152.4);
}

Tailwind CSS v4

@theme {
  --color-pitch-black-forests: #132f1c;
  --color-pitch-black-forests-50: #ebfaef;
  --color-pitch-black-forests-100: #dcede1;
  --color-pitch-black-forests-200: #c5dbcb;
  --color-pitch-black-forests-300: #a5bfac;
  --color-pitch-black-forests-400: #89a791;
  --color-pitch-black-forests-500: #6e9076;
  --color-pitch-black-forests-600: #5d7a64;
  --color-pitch-black-forests-700: #4a6150;
  --color-pitch-black-forests-800: #36473a;
  --color-pitch-black-forests-900: #253127;
  --color-pitch-black-forests-950: #141d16;
}

SCSS

$pitch-black-forests: #132f1c;
$pitch-black-forests-rgb: 19, 47, 28;
$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);
}