#360215

CSS

:root {
  --what-we-do-in-the-shadows: #360215;
  --what-we-do-in-the-shadows-rgb: 54 2 21;
  --what-we-do-in-the-shadows-oklch: oklch(0.217 0.083 4.7);
}

.element {
  color: var(--what-we-do-in-the-shadows);
  background-color: hsl(338 93% 11%);
  border-color: oklch(0.217 0.083 4.7);
}

Tailwind CSS v4

@theme {
  --color-what-we-do-in-the-shadows: #360215;
  --color-what-we-do-in-the-shadows-50: #ffecf1;
  --color-what-we-do-in-the-shadows-100: #ffdde3;
  --color-what-we-do-in-the-shadows-200: #f5c6ce;
  --color-what-we-do-in-the-shadows-300: #dda6b0;
  --color-what-we-do-in-the-shadows-400: #c98a98;
  --color-what-we-do-in-the-shadows-500: #b46e7f;
  --color-what-we-do-in-the-shadows-600: #985e6c;
  --color-what-we-do-in-the-shadows-700: #7a4b56;
  --color-what-we-do-in-the-shadows-800: #5a3640;
  --color-what-we-do-in-the-shadows-900: #3f252c;
  --color-what-we-do-in-the-shadows-950: #281319;
}

SCSS

$what-we-do-in-the-shadows: #360215;
$what-we-do-in-the-shadows-rgb: 54, 2, 21;
$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);
}