#201321

CSS

:root {
  --shot-in-the-dark: #201321;
  --shot-in-the-dark-rgb: 32 19 33;
  --shot-in-the-dark-oklch: oklch(0.211 0.033 324.2);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(296 27% 10%);
  border-color: oklch(0.211 0.033 324.2);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #201321;
  --color-shot-in-the-dark-50: #faf2fa;
  --color-shot-in-the-dark-100: #eee4ee;
  --color-shot-in-the-dark-200: #dcd0dc;
  --color-shot-in-the-dark-300: #c1b2c1;
  --color-shot-in-the-dark-400: #a998aa;
  --color-shot-in-the-dark-500: #927f93;
  --color-shot-in-the-dark-600: #7b6c7c;
  --color-shot-in-the-dark-700: #635663;
  --color-shot-in-the-dark-800: #483f49;
  --color-shot-in-the-dark-900: #322b33;
  --color-shot-in-the-dark-950: #1e181f;
}

SCSS

$shot-in-the-dark: #201321;
$shot-in-the-dark-rgb: 32, 19, 33;
$shot-in-the-dark-light: mix(#fff, $shot-in-the-dark, 20%);
$shot-in-the-dark-dark: mix(#000, $shot-in-the-dark, 20%);

.element {
  color: $shot-in-the-dark;
  box-shadow: 0 0 0 2px rgba($shot-in-the-dark, 0.35);
}