#23121E

CSS

:root {
  --shot-in-the-dark: #23121e;
  --shot-in-the-dark-rgb: 35 18 30;
  --shot-in-the-dark-oklch: oklch(0.211 0.035 338.5);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(318 32% 10%);
  border-color: oklch(0.211 0.035 338.5);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #23121e;
  --color-shot-in-the-dark-50: #fdf1f8;
  --color-shot-in-the-dark-100: #f1e4eb;
  --color-shot-in-the-dark-200: #dfcfd9;
  --color-shot-in-the-dark-300: #c5b1bd;
  --color-shot-in-the-dark-400: #ad97a5;
  --color-shot-in-the-dark-500: #967e8e;
  --color-shot-in-the-dark-600: #7f6a78;
  --color-shot-in-the-dark-700: #665560;
  --color-shot-in-the-dark-800: #4b3e47;
  --color-shot-in-the-dark-900: #342b31;
  --color-shot-in-the-dark-950: #1f181d;
}

SCSS

$shot-in-the-dark: #23121e;
$shot-in-the-dark-rgb: 35, 18, 30;
$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);
}