#030A03

CSS

:root {
  --jedi-night: #030a03;
  --jedi-night-rgb: 3 10 3;
  --jedi-night-oklch: oklch(0.132 0.025 144);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(120 54% 3%);
  border-color: oklch(0.132 0.025 144);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #030a03;
  --color-jedi-night-50: #f1f7f1;
  --color-jedi-night-100: #e3eae3;
  --color-jedi-night-200: #ced7ce;
  --color-jedi-night-300: #b0bbb0;
  --color-jedi-night-400: #96a395;
  --color-jedi-night-500: #7d8b7c;
  --color-jedi-night-600: #6a7569;
  --color-jedi-night-700: #545e54;
  --color-jedi-night-800: #3e453d;
  --color-jedi-night-900: #2a2f2a;
  --color-jedi-night-950: #181c17;
}

SCSS

$jedi-night: #030a03;
$jedi-night-rgb: 3, 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);
}