#1F1326

CSS

:root {
  --shot-in-the-dark: #1f1326;
  --shot-in-the-dark-rgb: 31 19 38;
  --shot-in-the-dark-oklch: oklch(0.212 0.04 312.3);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(278 33% 11%);
  border-color: oklch(0.212 0.04 312.3);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #1f1326;
  --color-shot-in-the-dark-50: #f9f2fd;
  --color-shot-in-the-dark-100: #ede4f1;
  --color-shot-in-the-dark-200: #dbcfe0;
  --color-shot-in-the-dark-300: #bfb2c6;
  --color-shot-in-the-dark-400: #a798b0;
  --color-shot-in-the-dark-500: #8f7f9a;
  --color-shot-in-the-dark-600: #796b82;
  --color-shot-in-the-dark-700: #615668;
  --color-shot-in-the-dark-800: #473f4d;
  --color-shot-in-the-dark-900: #312b35;
  --color-shot-in-the-dark-950: #1d1821;
}

SCSS

$shot-in-the-dark: #1f1326;
$shot-in-the-dark-rgb: 31, 19, 38;
$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);
}