#241122

CSS

:root {
  --shot-in-the-dark: #241122;
  --shot-in-the-dark-rgb: 36 17 34;
  --shot-in-the-dark-oklch: oklch(0.213 0.043 330.8);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(306 36% 10%);
  border-color: oklch(0.213 0.043 330.8);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #241122;
  --color-shot-in-the-dark-50: #fdf1fb;
  --color-shot-in-the-dark-100: #f1e3ee;
  --color-shot-in-the-dark-200: #e0cedc;
  --color-shot-in-the-dark-300: #c5b0c1;
  --color-shot-in-the-dark-400: #ae96aa;
  --color-shot-in-the-dark-500: #977c94;
  --color-shot-in-the-dark-600: #80697d;
  --color-shot-in-the-dark-700: #665464;
  --color-shot-in-the-dark-800: #4b3d4a;
  --color-shot-in-the-dark-900: #342a33;
  --color-shot-in-the-dark-950: #1f181f;
}

SCSS

$shot-in-the-dark: #241122;
$shot-in-the-dark-rgb: 36, 17, 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);
}