#0A130B

CSS

:root {
  --jedi-night: #0a130b;
  --jedi-night-rgb: 10 19 11;
  --jedi-night-oklch: oklch(0.175 0.021 147.4);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(127 31% 6%);
  border-color: oklch(0.175 0.021 147.4);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #0a130b;
  --color-jedi-night-50: #f1f7f2;
  --color-jedi-night-100: #e3eae4;
  --color-jedi-night-200: #ced7cf;
  --color-jedi-night-300: #b0bbb2;
  --color-jedi-night-400: #97a297;
  --color-jedi-night-500: #7d8a7e;
  --color-jedi-night-600: #6a756b;
  --color-jedi-night-700: #555e55;
  --color-jedi-night-800: #3e443e;
  --color-jedi-night-900: #2b2f2b;
  --color-jedi-night-950: #181c18;
}

SCSS

$jedi-night: #0a130b;
$jedi-night-rgb: 10, 19, 11;
$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);
}