#422273

CSS

:root {
  --explorer-of-the-galaxies: #422273;
  --explorer-of-the-galaxies-rgb: 66 34 115;
  --explorer-of-the-galaxies-oklch: oklch(0.343 0.132 297);
}

.element {
  color: var(--explorer-of-the-galaxies);
  background-color: hsl(264 54% 29%);
  border-color: oklch(0.343 0.132 297);
}

Tailwind CSS v4

@theme {
  --color-explorer-of-the-galaxies: #422273;
  --color-explorer-of-the-galaxies-50: #faeeff;
  --color-explorer-of-the-galaxies-100: #eddfff;
  --color-explorer-of-the-galaxies-200: #dcc8ff;
  --color-explorer-of-the-galaxies-300: #c0a8f2;
  --color-explorer-of-the-galaxies-400: #a78de3;
  --color-explorer-of-the-galaxies-500: #9071d2;
  --color-explorer-of-the-galaxies-600: #7a60b1;
  --color-explorer-of-the-galaxies-700: #624c8e;
  --color-explorer-of-the-galaxies-800: #46386b;
  --color-explorer-of-the-galaxies-900: #30264b;
  --color-explorer-of-the-galaxies-950: #1d1431;
}

SCSS

$explorer-of-the-galaxies: #422273;
$explorer-of-the-galaxies-rgb: 66, 34, 115;
$explorer-of-the-galaxies-light: mix(#fff, $explorer-of-the-galaxies, 20%);
$explorer-of-the-galaxies-dark: mix(#000, $explorer-of-the-galaxies, 20%);

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