#1D1426

CSS

:root {
  --shot-in-the-dark: #1d1426;
  --shot-in-the-dark-rgb: 29 20 38;
  --shot-in-the-dark-oklch: oklch(0.212 0.037 306.5);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(270 31% 11%);
  border-color: oklch(0.212 0.037 306.5);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #1d1426;
  --color-shot-in-the-dark-50: #f8f2fd;
  --color-shot-in-the-dark-100: #ebe5f2;
  --color-shot-in-the-dark-200: #d9d0e1;
  --color-shot-in-the-dark-300: #bdb3c6;
  --color-shot-in-the-dark-400: #a499b0;
  --color-shot-in-the-dark-500: #8c809a;
  --color-shot-in-the-dark-600: #776d82;
  --color-shot-in-the-dark-700: #5f5768;
  --color-shot-in-the-dark-800: #453f4d;
  --color-shot-in-the-dark-900: #302c35;
  --color-shot-in-the-dark-950: #1c1921;
}

SCSS

$shot-in-the-dark: #1d1426;
$shot-in-the-dark-rgb: 29, 20, 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);
}