#000803

CSS

:root {
  --jedi-night: #000803;
  --jedi-night-rgb: 0 8 3;
  --jedi-night-oklch: oklch(0.118 0.027 158.8);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(143 100% 2%);
  border-color: oklch(0.118 0.027 158.8);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #000803;
  --color-jedi-night-50: #eff8f2;
  --color-jedi-night-100: #e0ebe5;
  --color-jedi-night-200: #cbd8d0;
  --color-jedi-night-300: #acbcb3;
  --color-jedi-night-400: #91a499;
  --color-jedi-night-500: #778c80;
  --color-jedi-night-600: #65766c;
  --color-jedi-night-700: #515f56;
  --color-jedi-night-800: #3b453f;
  --color-jedi-night-900: #28302b;
  --color-jedi-night-950: #161c18;
}

SCSS

$jedi-night: #000803;
$jedi-night-rgb: 0, 8, 3;
$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);
}