#0D130B

CSS

:root {
  --jedi-night: #0d130b;
  --jedi-night-rgb: 13 19 11;
  --jedi-night-oklch: oklch(0.177 0.019 138);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(105 27% 6%);
  border-color: oklch(0.177 0.019 138);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #0d130b;
  --color-jedi-night-50: #f2f6f1;
  --color-jedi-night-100: #e5e9e4;
  --color-jedi-night-200: #d0d6cf;
  --color-jedi-night-300: #b3bab1;
  --color-jedi-night-400: #99a197;
  --color-jedi-night-500: #80897d;
  --color-jedi-night-600: #6d746a;
  --color-jedi-night-700: #575d55;
  --color-jedi-night-800: #40443e;
  --color-jedi-night-900: #2c2f2a;
  --color-jedi-night-950: #191b18;
}

SCSS

$jedi-night: #0d130b;
$jedi-night-rgb: 13, 19, 11;
$jedi-night-light: mix(#fff, $jedi-night, 20%);
$jedi-night-dark: mix(#000, $jedi-night, 20%);

.element {
  color: $jedi-night;
  box-shadow: 0 0 0 2px rgba($jedi-night, 0.35);
}