#1A1229

CSS

:root {
  --shot-in-the-dark: #1a1229;
  --shot-in-the-dark-rgb: 26 18 41;
  --shot-in-the-dark-oklch: oklch(0.205 0.045 298.4);
}

.element {
  color: var(--shot-in-the-dark);
  background-color: hsl(261 39% 12%);
  border-color: oklch(0.205 0.045 298.4);
}

Tailwind CSS v4

@theme {
  --color-shot-in-the-dark: #1a1229;
  --color-shot-in-the-dark-50: #f7f2ff;
  --color-shot-in-the-dark-100: #eae5f5;
  --color-shot-in-the-dark-200: #d7d0e5;
  --color-shot-in-the-dark-300: #bbb3cc;
  --color-shot-in-the-dark-400: #a199b6;
  --color-shot-in-the-dark-500: #8a80a1;
  --color-shot-in-the-dark-600: #746c88;
  --color-shot-in-the-dark-700: #5d576d;
  --color-shot-in-the-dark-800: #443f51;
  --color-shot-in-the-dark-900: #2f2c38;
  --color-shot-in-the-dark-950: #1b1923;
}

SCSS

$shot-in-the-dark: #1a1229;
$shot-in-the-dark-rgb: 26, 18, 41;
$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);
}