#1D1423

CSS

:root {
  --shot-in-the-dark: #1d1423;
  --shot-in-the-dark-rgb: 29 20 35;
  --shot-in-the-dark-oklch: oklch(0.21 0.032 311.2);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(276 27% 11%);
  border-color: oklch(0.21 0.032 311.2);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #1d1423;
  --color-shot-in-the-dark-50: #f8f3fc;
  --color-shot-in-the-dark-100: #ece5f0;
  --color-shot-in-the-dark-200: #d9d1de;
  --color-shot-in-the-dark-300: #bdb3c3;
  --color-shot-in-the-dark-400: #a599ad;
  --color-shot-in-the-dark-500: #8d8196;
  --color-shot-in-the-dark-600: #776d7f;
  --color-shot-in-the-dark-700: #5f5766;
  --color-shot-in-the-dark-800: #46404b;
  --color-shot-in-the-dark-900: #302c34;
  --color-shot-in-the-dark-950: #1c191f;
}

SCSS

$shot-in-the-dark: #1d1423;
$shot-in-the-dark-rgb: 29, 20, 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);
}