#1F1324

CSS

:root {
  --shot-in-the-dark: #1f1324;
  --shot-in-the-dark-rgb: 31 19 36;
  --shot-in-the-dark-oklch: oklch(0.211 0.037 315.6);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(282 31% 11%);
  border-color: oklch(0.211 0.037 315.6);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #1f1324;
  --color-shot-in-the-dark-50: #faf2fc;
  --color-shot-in-the-dark-100: #ede4f0;
  --color-shot-in-the-dark-200: #dbd0df;
  --color-shot-in-the-dark-300: #bfb2c4;
  --color-shot-in-the-dark-400: #a798ae;
  --color-shot-in-the-dark-500: #907f97;
  --color-shot-in-the-dark-600: #7a6c80;
  --color-shot-in-the-dark-700: #615666;
  --color-shot-in-the-dark-800: #473f4c;
  --color-shot-in-the-dark-900: #312b34;
  --color-shot-in-the-dark-950: #1d1920;
}

SCSS

$shot-in-the-dark: #1f1324;
$shot-in-the-dark-rgb: 31, 19, 36;
$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);
}