#41041D

CSS

:root {
  --what-we-do-in-the-shadows: #41041d;
  --what-we-do-in-the-shadows-rgb: 65 4 29;
  --what-we-do-in-the-shadows-oklch: oklch(0.247 0.092 2.6);
}

.element {
  color: var(--what-we-do-in-the-shadows);
  background-color: hsl(335 88% 14%);
  border-color: oklch(0.247 0.092 2.6);
}

Tailwind CSS v4

@theme {
  --color-what-we-do-in-the-shadows: #41041d;
  --color-what-we-do-in-the-shadows-50: #ffebf2;
  --color-what-we-do-in-the-shadows-100: #ffdce4;
  --color-what-we-do-in-the-shadows-200: #f8c4cf;
  --color-what-we-do-in-the-shadows-300: #e1a4b1;
  --color-what-we-do-in-the-shadows-400: #cd8799;
  --color-what-we-do-in-the-shadows-500: #b96b81;
  --color-what-we-do-in-the-shadows-600: #9c5b6d;
  --color-what-we-do-in-the-shadows-700: #7d4957;
  --color-what-we-do-in-the-shadows-800: #5c3441;
  --color-what-we-do-in-the-shadows-900: #41242d;
  --color-what-we-do-in-the-shadows-950: #29121a;
}

SCSS

$what-we-do-in-the-shadows: #41041d;
$what-we-do-in-the-shadows-rgb: 65, 4, 29;
$what-we-do-in-the-shadows-light: mix(#fff, $what-we-do-in-the-shadows, 20%);
$what-we-do-in-the-shadows-dark: mix(#000, $what-we-do-in-the-shadows, 20%);

.element {
  color: $what-we-do-in-the-shadows;
  box-shadow: 0 0 0 2px rgba($what-we-do-in-the-shadows, 0.35);
}