#1F1421

CSS

:root {
  --shot-in-the-dark: #1f1421;
  --shot-in-the-dark-rgb: 31 20 33;
  --shot-in-the-dark-oklch: oklch(0.212 0.03 321.2);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(291 25% 10%);
  border-color: oklch(0.212 0.03 321.2);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #1f1421;
  --color-shot-in-the-dark-50: #faf2fa;
  --color-shot-in-the-dark-100: #ede5ee;
  --color-shot-in-the-dark-200: #dbd0dc;
  --color-shot-in-the-dark-300: #bfb3c0;
  --color-shot-in-the-dark-400: #a799a9;
  --color-shot-in-the-dark-500: #908092;
  --color-shot-in-the-dark-600: #7a6c7c;
  --color-shot-in-the-dark-700: #615763;
  --color-shot-in-the-dark-800: #473f49;
  --color-shot-in-the-dark-900: #312b33;
  --color-shot-in-the-dark-950: #1d191e;
}

SCSS

$shot-in-the-dark: #1f1421;
$shot-in-the-dark-rgb: 31, 20, 33;
$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);
}