#3B2A49

CSS

:root {
  --sanctum-of-shadows: #3b2a49;
  --sanctum-of-shadows-rgb: 59 42 73;
  --sanctum-of-shadows-oklch: oklch(0.319 0.058 308.6);
}

.element {
  color: var(--sanctum-of-shadows);
  background-color: hsl(273 27% 23%);
  border-color: oklch(0.319 0.058 308.6);
}

Tailwind CSS v4

@theme {
  --color-sanctum-of-shadows: #3b2a49;
  --color-sanctum-of-shadows-50: #faf1ff;
  --color-sanctum-of-shadows-100: #eee3f7;
  --color-sanctum-of-shadows-200: #dccee7;
  --color-sanctum-of-shadows-300: #c1b0ce;
  --color-sanctum-of-shadows-400: #a896b9;
  --color-sanctum-of-shadows-500: #917ca4;
  --color-sanctum-of-shadows-600: #7b698a;
  --color-sanctum-of-shadows-700: #62546f;
  --color-sanctum-of-shadows-800: #473d52;
  --color-sanctum-of-shadows-900: #312a39;
  --color-sanctum-of-shadows-950: #1d1824;
}

SCSS

$sanctum-of-shadows: #3b2a49;
$sanctum-of-shadows-rgb: 59, 42, 73;
$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);
}