#040B04

CSS

:root {
  --jedi-night: #040b04;
  --jedi-night-rgb: 4 11 4;
  --jedi-night-oklch: oklch(0.138 0.023 144.2);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(120 47% 3%);
  border-color: oklch(0.138 0.023 144.2);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #040b04;
  --color-jedi-night-50: #f1f7f1;
  --color-jedi-night-100: #e3eae3;
  --color-jedi-night-200: #ced7cf;
  --color-jedi-night-300: #b0bbb1;
  --color-jedi-night-400: #97a296;
  --color-jedi-night-500: #7d8a7d;
  --color-jedi-night-600: #6a756a;
  --color-jedi-night-700: #555e54;
  --color-jedi-night-800: #3e443d;
  --color-jedi-night-900: #2b2f2a;
  --color-jedi-night-950: #181c18;
}

SCSS

$jedi-night: #040b04;
$jedi-night-rgb: 4, 11, 4;
$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);
}