#271123

CSS

:root {
  --shot-in-the-dark: #271123;
  --shot-in-the-dark-rgb: 39 17 35;
  --shot-in-the-dark-oklch: oklch(0.218 0.047 334.2);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(311 39% 11%);
  border-color: oklch(0.218 0.047 334.2);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #271123;
  --color-shot-in-the-dark-50: #fff0fa;
  --color-shot-in-the-dark-100: #f3e2ee;
  --color-shot-in-the-dark-200: #e2cddc;
  --color-shot-in-the-dark-300: #c8afc1;
  --color-shot-in-the-dark-400: #b094aa;
  --color-shot-in-the-dark-500: #9a7b93;
  --color-shot-in-the-dark-600: #82687c;
  --color-shot-in-the-dark-700: #685364;
  --color-shot-in-the-dark-800: #4c3c4a;
  --color-shot-in-the-dark-900: #352a33;
  --color-shot-in-the-dark-950: #20171f;
}

SCSS

$shot-in-the-dark: #271123;
$shot-in-the-dark-rgb: 39, 17, 35;
$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);
}