#3D304C

CSS

:root {
  --sanctum-of-shadows: #3d304c;
  --sanctum-of-shadows-rgb: 61 48 76;
  --sanctum-of-shadows-oklch: oklch(0.336 0.051 305.1);
}

.element {
  color: var(--sanctum-of-shadows);
  background-color: hsl(268 23% 24%);
  border-color: oklch(0.336 0.051 305.1);
}

Tailwind CSS v4

@theme {
  --color-sanctum-of-shadows: #3d304c;
  --color-sanctum-of-shadows-50: #f9f2ff;
  --color-sanctum-of-shadows-100: #ece4f6;
  --color-sanctum-of-shadows-200: #dacfe6;
  --color-sanctum-of-shadows-300: #beb1cc;
  --color-sanctum-of-shadows-400: #a597b7;
  --color-sanctum-of-shadows-500: #8e7ea2;
  --color-sanctum-of-shadows-600: #786b89;
  --color-sanctum-of-shadows-700: #60556d;
  --color-sanctum-of-shadows-800: #463e51;
  --color-sanctum-of-shadows-900: #302b38;
  --color-sanctum-of-shadows-950: #1d1823;
}

SCSS

$sanctum-of-shadows: #3d304c;
$sanctum-of-shadows-rgb: 61, 48, 76;
$sanctum-of-shadows-light: mix(#fff, $sanctum-of-shadows, 20%);
$sanctum-of-shadows-dark: mix(#000, $sanctum-of-shadows, 20%);

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