#474480

CSS

:root {
  --queen-of-the-night-shift: #474480;
  --queen-of-the-night-shift-rgb: 71 68 128;
  --queen-of-the-night-shift-oklch: oklch(0.42 0.098 283.6);
}

.element {
  color: var(--queen-of-the-night-shift);
  background-color: hsl(243 31% 38%);
  border-color: oklch(0.42 0.098 283.6);
}

Tailwind CSS v4

@theme {
  --color-queen-of-the-night-shift: #474480;
  --color-queen-of-the-night-shift-50: #f2f2ff;
  --color-queen-of-the-night-shift-100: #e4e4ff;
  --color-queen-of-the-night-shift-200: #d0cffd;
  --color-queen-of-the-night-shift-300: #b2b1e8;
  --color-queen-of-the-night-shift-400: #9797d7;
  --color-queen-of-the-night-shift-500: #7e7dc5;
  --color-queen-of-the-night-shift-600: #6b6aa6;
  --color-queen-of-the-night-shift-700: #555585;
  --color-queen-of-the-night-shift-800: #3d3e63;
  --color-queen-of-the-night-shift-900: #2a2b46;
  --color-queen-of-the-night-shift-950: #17182d;
}

SCSS

$queen-of-the-night-shift: #474480;
$queen-of-the-night-shift-rgb: 71, 68, 128;
$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);
}