#231220

CSS

:root {
  --shot-in-the-dark: #231220;
  --shot-in-the-dark-rgb: 35 18 32;
  --shot-in-the-dark-oklch: oklch(0.212 0.037 333.4);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(311 32% 10%);
  border-color: oklch(0.212 0.037 333.4);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #231220;
  --color-shot-in-the-dark-50: #fcf1f9;
  --color-shot-in-the-dark-100: #f0e3ed;
  --color-shot-in-the-dark-200: #dfcfda;
  --color-shot-in-the-dark-300: #c4b1bf;
  --color-shot-in-the-dark-400: #ad97a8;
  --color-shot-in-the-dark-500: #967d91;
  --color-shot-in-the-dark-600: #7f6a7a;
  --color-shot-in-the-dark-700: #665562;
  --color-shot-in-the-dark-800: #4a3e48;
  --color-shot-in-the-dark-900: #342a32;
  --color-shot-in-the-dark-950: #1f181e;
}

SCSS

$shot-in-the-dark: #231220;
$shot-in-the-dark-rgb: 35, 18, 32;
$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);
}