#281626

CSS

:root {
  --shot-in-the-dark: #281626;
  --shot-in-the-dark-rgb: 40 22 38;
  --shot-in-the-dark-oklch: oklch(0.232 0.04 330.8);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(307 29% 12%);
  border-color: oklch(0.232 0.04 330.8);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #281626;
  --color-shot-in-the-dark-50: #fdf1fa;
  --color-shot-in-the-dark-100: #f1e3ee;
  --color-shot-in-the-dark-200: #dfcedc;
  --color-shot-in-the-dark-300: #c5b0c0;
  --color-shot-in-the-dark-400: #ad96aa;
  --color-shot-in-the-dark-500: #967d93;
  --color-shot-in-the-dark-600: #7f6a7c;
  --color-shot-in-the-dark-700: #665463;
  --color-shot-in-the-dark-800: #4a3e49;
  --color-shot-in-the-dark-900: #342a33;
  --color-shot-in-the-dark-950: #1f181f;
}

SCSS

$shot-in-the-dark: #281626;
$shot-in-the-dark-rgb: 40, 22, 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);
}