#281B27

CSS

:root {
  --shot-in-the-dark: #281b27;
  --shot-in-the-dark-rgb: 40 27 39;
  --shot-in-the-dark-oklch: oklch(0.243 0.029 329);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(305 19% 13%);
  border-color: oklch(0.243 0.029 329);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #281b27;
  --color-shot-in-the-dark-50: #faf2f9;
  --color-shot-in-the-dark-100: #eee4ec;
  --color-shot-in-the-dark-200: #dcd0da;
  --color-shot-in-the-dark-300: #c1b2be;
  --color-shot-in-the-dark-400: #a999a7;
  --color-shot-in-the-dark-500: #927f90;
  --color-shot-in-the-dark-600: #7b6c7a;
  --color-shot-in-the-dark-700: #635661;
  --color-shot-in-the-dark-800: #483f48;
  --color-shot-in-the-dark-900: #322b32;
  --color-shot-in-the-dark-950: #1e191e;
}

SCSS

$shot-in-the-dark: #281b27;
$shot-in-the-dark-rgb: 40, 27, 39;
$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);
}