#211322

CSS

:root {
  --shot-in-the-dark: #211322;
  --shot-in-the-dark-rgb: 33 19 34;
  --shot-in-the-dark-oklch: oklch(0.213 0.035 324.4);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(296 28% 10%);
  border-color: oklch(0.213 0.035 324.4);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #211322;
  --color-shot-in-the-dark-50: #fbf2fb;
  --color-shot-in-the-dark-100: #eee4ee;
  --color-shot-in-the-dark-200: #ddcfdc;
  --color-shot-in-the-dark-300: #c1b1c1;
  --color-shot-in-the-dark-400: #a998aa;
  --color-shot-in-the-dark-500: #927e94;
  --color-shot-in-the-dark-600: #7c6b7d;
  --color-shot-in-the-dark-700: #635664;
  --color-shot-in-the-dark-800: #483e4a;
  --color-shot-in-the-dark-900: #322b33;
  --color-shot-in-the-dark-950: #1e181f;
}

SCSS

$shot-in-the-dark: #211322;
$shot-in-the-dark-rgb: 33, 19, 34;
$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);
}