Queen of the Night Shift

CSS

:root {
  --queen-of-the-night-shift: #3d4585;
  --queen-of-the-night-shift-rgb: 61 69 133;
  --queen-of-the-night-shift-oklch: oklch(0.417 0.106 275.5);
}

.element {
  color: var(--queen-of-the-night-shift);
  background-color: hsl(233 37% 38%);
  border-color: oklch(0.417 0.106 275.5);
}

Tailwind CSS v4

@theme {
  --color-queen-of-the-night-shift: #3d4585;
  --color-queen-of-the-night-shift-50: #edf3ff;
  --color-queen-of-the-night-shift-100: #dfe5ff;
  --color-queen-of-the-night-shift-200: #c9d1ff;
  --color-queen-of-the-night-shift-300: #aab3ee;
  --color-queen-of-the-night-shift-400: #8d99dd;
  --color-queen-of-the-night-shift-500: #737fcc;
  --color-queen-of-the-night-shift-600: #616cac;
  --color-queen-of-the-night-shift-700: #4d568a;
  --color-queen-of-the-night-shift-800: #373f67;
  --color-queen-of-the-night-shift-900: #252c48;
  --color-queen-of-the-night-shift-950: #14192f;
}

SCSS

$queen-of-the-night-shift: #3d4585;
$queen-of-the-night-shift-rgb: 61, 69, 133;
$queen-of-the-night-shift-light: mix(#fff, $queen-of-the-night-shift, 20%);
$queen-of-the-night-shift-dark: mix(#000, $queen-of-the-night-shift, 20%);

.element {
  color: $queen-of-the-night-shift;
  box-shadow: 0 0 0 2px rgba($queen-of-the-night-shift, 0.35);
}