#001106

CSS

:root {
  --jedi-night: #001106;
  --jedi-night-rgb: 0 17 6;
  --jedi-night-oklch: oklch(0.156 0.038 156.3);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(141 100% 3%);
  border-color: oklch(0.156 0.038 156.3);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #001106;
  --color-jedi-night-50: #edf9f1;
  --color-jedi-night-100: #deece3;
  --color-jedi-night-200: #c8d9ce;
  --color-jedi-night-300: #a8beb0;
  --color-jedi-night-400: #8da595;
  --color-jedi-night-500: #728e7c;
  --color-jedi-night-600: #617869;
  --color-jedi-night-700: #4d6054;
  --color-jedi-night-800: #38463d;
  --color-jedi-night-900: #27312a;
  --color-jedi-night-950: #151d17;
}

SCSS

$jedi-night: #001106;
$jedi-night-rgb: 0, 17, 6;
$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);
}