#0F1A13

CSS

:root {
  --jedi-night: #0f1a13;
  --jedi-night-rgb: 15 26 19;
  --jedi-night-oklch: oklch(0.205 0.021 156.1);
}

.element {
  color: var(--jedi-night);
  background-color: hsl(142 27% 8%);
  border-color: oklch(0.205 0.021 156.1);
}

Tailwind CSS v4

@theme {
  --color-jedi-night: #0f1a13;
  --color-jedi-night-50: #f0f7f3;
  --color-jedi-night-100: #e2eae5;
  --color-jedi-night-200: #cdd7d1;
  --color-jedi-night-300: #afbbb3;
  --color-jedi-night-400: #95a299;
  --color-jedi-night-500: #7b8b80;
  --color-jedi-night-600: #69756d;
  --color-jedi-night-700: #545e57;
  --color-jedi-night-800: #3d453f;
  --color-jedi-night-900: #2a2f2b;
  --color-jedi-night-950: #171c19;
}

SCSS

$jedi-night: #0f1a13;
$jedi-night-rgb: 15, 26, 19;
$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);
}