#0A130C

CSS

:root {
  --jedi-night: #0a130c;
  --jedi-night-rgb: 10 19 12;
  --jedi-night-oklch: oklch(0.175 0.02 150.8);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(133 31% 6%);
  border-color: oklch(0.175 0.02 150.8);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #0a130c;
  --color-jedi-night-50: #f1f7f2;
  --color-jedi-night-100: #e3eae5;
  --color-jedi-night-200: #ced7d0;
  --color-jedi-night-300: #b0bab3;
  --color-jedi-night-400: #96a298;
  --color-jedi-night-500: #7d8a80;
  --color-jedi-night-600: #6a756c;
  --color-jedi-night-700: #555d56;
  --color-jedi-night-800: #3e443f;
  --color-jedi-night-900: #2b2f2b;
  --color-jedi-night-950: #181c18;
}

SCSS

$jedi-night: #0a130c;
$jedi-night-rgb: 10, 19, 12;
$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);
}