#000A03

CSS

:root {
  --jedi-night: #000a03;
  --jedi-night-rgb: 0 10 3;
  --jedi-night-oklch: oklch(0.127 0.031 155.1);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(138 100% 2%);
  border-color: oklch(0.127 0.031 155.1);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #000a03;
  --color-jedi-night-50: #eef8f2;
  --color-jedi-night-100: #e0ebe4;
  --color-jedi-night-200: #cad8cf;
  --color-jedi-night-300: #abbdb1;
  --color-jedi-night-400: #90a496;
  --color-jedi-night-500: #768d7d;
  --color-jedi-night-600: #64776a;
  --color-jedi-night-700: #505f55;
  --color-jedi-night-800: #3a463d;
  --color-jedi-night-900: #28302a;
  --color-jedi-night-950: #161c18;
}

SCSS

$jedi-night: #000a03;
$jedi-night-rgb: 0, 10, 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);
}