#33002D

CSS

:root {
  --dark-sanctuary: #33002d;
  --dark-sanctuary-rgb: 51 0 45;
  --dark-sanctuary-oklch: oklch(0.221 0.099 333.9);
}

.element {
  color: var(--dark-sanctuary);
  background-color: hsl(307 100% 10%);
  border-color: oklch(0.221 0.099 333.9);
}

Tailwind CSS v4

@theme {
  --color-dark-sanctuary: #33002d;
  --color-dark-sanctuary-50: #ffebff;
  --color-dark-sanctuary-100: #fedcf5;
  --color-dark-sanctuary-200: #f0c5e5;
  --color-dark-sanctuary-300: #d8a5cb;
  --color-dark-sanctuary-400: #c288b7;
  --color-dark-sanctuary-500: #ad6ca1;
  --color-dark-sanctuary-600: #935c88;
  --color-dark-sanctuary-700: #76496d;
  --color-dark-sanctuary-800: #563552;
  --color-dark-sanctuary-900: #3c2439;
  --color-dark-sanctuary-950: #261323;
}

SCSS

$dark-sanctuary: #33002d;
$dark-sanctuary-rgb: 51, 0, 45;
$dark-sanctuary-light: mix(#fff, $dark-sanctuary, 20%);
$dark-sanctuary-dark: mix(#000, $dark-sanctuary, 20%);

.element {
  color: $dark-sanctuary;
  box-shadow: 0 0 0 2px rgba($dark-sanctuary, 0.35);
}