#251023

CSS

:root {
  --shot-in-the-dark: #251023;
  --shot-in-the-dark-rgb: 37 16 35;
  --shot-in-the-dark-oklch: oklch(0.213 0.047 330.7);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(306 40% 10%);
  border-color: oklch(0.213 0.047 330.7);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #251023;
  --color-shot-in-the-dark-50: #fef0fb;
  --color-shot-in-the-dark-100: #f2e2ef;
  --color-shot-in-the-dark-200: #e1cddd;
  --color-shot-in-the-dark-300: #c7afc2;
  --color-shot-in-the-dark-400: #af95ac;
  --color-shot-in-the-dark-500: #997b95;
  --color-shot-in-the-dark-600: #81687e;
  --color-shot-in-the-dark-700: #685365;
  --color-shot-in-the-dark-800: #4c3d4b;
  --color-shot-in-the-dark-900: #352a34;
  --color-shot-in-the-dark-950: #20171f;
}

SCSS

$shot-in-the-dark: #251023;
$shot-in-the-dark-rgb: 37, 16, 35;
$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);
}