#7F1A61

CSS

:root {
  --bane-of-royalty: #7f1a61;
  --bane-of-royalty-rgb: 127 26 97;
  --bane-of-royalty-oklch: oklch(0.414 0.154 343);
}

.element {
  color: var(--bane-of-royalty);
  background-color: hsl(318 66% 30%);
  border-color: oklch(0.414 0.154 343);
}

Tailwind CSS v4

@theme {
  --color-bane-of-royalty: #7f1a61;
  --color-bane-of-royalty-50: #ffe4ff;
  --color-bane-of-royalty-100: #ffd4f4;
  --color-bane-of-royalty-200: #ffbae3;
  --color-bane-of-royalty-300: #ef97c9;
  --color-bane-of-royalty-400: #db77b6;
  --color-bane-of-royalty-500: #c855a1;
  --color-bane-of-royalty-600: #a94988;
  --color-bane-of-royalty-700: #883a6d;
  --color-bane-of-royalty-800: #642952;
  --color-bane-of-royalty-900: #461c39;
  --color-bane-of-royalty-950: #2d0c23;
}

SCSS

$bane-of-royalty: #7f1a61;
$bane-of-royalty-rgb: 127, 26, 97;
$bane-of-royalty-light: mix(#fff, $bane-of-royalty, 20%);
$bane-of-royalty-dark: mix(#000, $bane-of-royalty, 20%);

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