#211226

CSS

:root {
  --shot-in-the-dark: #211226;
  --shot-in-the-dark-rgb: 33 18 38;
  --shot-in-the-dark-oklch: oklch(0.213 0.044 317.3);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(285 36% 11%);
  border-color: oklch(0.213 0.044 317.3);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #211226;
  --color-shot-in-the-dark-50: #fbf1fd;
  --color-shot-in-the-dark-100: #eee3f1;
  --color-shot-in-the-dark-200: #ddcfe0;
  --color-shot-in-the-dark-300: #c1b1c6;
  --color-shot-in-the-dark-400: #a997b0;
  --color-shot-in-the-dark-500: #927d9a;
  --color-shot-in-the-dark-600: #7c6a82;
  --color-shot-in-the-dark-700: #635568;
  --color-shot-in-the-dark-800: #483e4d;
  --color-shot-in-the-dark-900: #322b35;
  --color-shot-in-the-dark-950: #1e1821;
}

SCSS

$shot-in-the-dark: #211226;
$shot-in-the-dark-rgb: 33, 18, 38;
$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);
}