#1F1228

CSS

:root {
  --shot-in-the-dark: #1f1228;
  --shot-in-the-dark-rgb: 31 18 40;
  --shot-in-the-dark-oklch: oklch(0.211 0.046 310.2);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(275 38% 11%);
  border-color: oklch(0.211 0.046 310.2);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #1f1228;
  --color-shot-in-the-dark-50: #faf2ff;
  --color-shot-in-the-dark-100: #ede4f3;
  --color-shot-in-the-dark-200: #dbcfe3;
  --color-shot-in-the-dark-300: #bfb1c9;
  --color-shot-in-the-dark-400: #a797b3;
  --color-shot-in-the-dark-500: #907e9d;
  --color-shot-in-the-dark-600: #796b85;
  --color-shot-in-the-dark-700: #61556a;
  --color-shot-in-the-dark-800: #473e4f;
  --color-shot-in-the-dark-900: #312b37;
  --color-shot-in-the-dark-950: #1d1822;
}

SCSS

$shot-in-the-dark: #1f1228;
$shot-in-the-dark-rgb: 31, 18, 40;
$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);
}