#06281C

CSS

:root {
  --pitch-black-forests: #06281c;
  --pitch-black-forests-rgb: 6 40 28;
  --pitch-black-forests-oklch: oklch(0.248 0.045 165.6);
}

.element {
  color: var(--pitch-black-forests);
  background-color: hsl(159 74% 9%);
  border-color: oklch(0.248 0.045 165.6);
}

Tailwind CSS v4

@theme {
  --color-pitch-black-forests: #06281c;
  --color-pitch-black-forests-50: #eafaf2;
  --color-pitch-black-forests-100: #daede5;
  --color-pitch-black-forests-200: #c3dbd0;
  --color-pitch-black-forests-300: #a2bfb3;
  --color-pitch-black-forests-400: #86a798;
  --color-pitch-black-forests-500: #6a907f;
  --color-pitch-black-forests-600: #5a7a6c;
  --color-pitch-black-forests-700: #486256;
  --color-pitch-black-forests-800: #34473e;
  --color-pitch-black-forests-900: #23322b;
  --color-pitch-black-forests-950: #121d18;
}

SCSS

$pitch-black-forests: #06281c;
$pitch-black-forests-rgb: 6, 40, 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);
}