#030D07

CSS

:root {
  --jedi-night: #030d07;
  --jedi-night-rgb: 3 13 7;
  --jedi-night-oklch: oklch(0.145 0.023 159.6);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(144 63% 3%);
  border-color: oklch(0.145 0.023 159.6);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #030d07;
  --color-jedi-night-50: #f0f7f3;
  --color-jedi-night-100: #e2eae5;
  --color-jedi-night-200: #ccd7d1;
  --color-jedi-night-300: #aebbb4;
  --color-jedi-night-400: #94a39a;
  --color-jedi-night-500: #7a8b81;
  --color-jedi-night-600: #67766d;
  --color-jedi-night-700: #525e57;
  --color-jedi-night-800: #3c453f;
  --color-jedi-night-900: #29302c;
  --color-jedi-night-950: #171c19;
}

SCSS

$jedi-night: #030d07;
$jedi-night-rgb: 3, 13, 7;
$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);
}