#331322

CSS

:root {
  --black-hearted: #331322;
  --black-hearted-rgb: 51 19 34;
  --black-hearted-oklch: oklch(0.242 0.056 352.7);
}

.element {
  color: var(--black-hearted);
  background-color: hsl(332 46% 14%);
  border-color: oklch(0.242 0.056 352.7);
}

Tailwind CSS v4

@theme {
  --color-black-hearted: #331322;
  --color-black-hearted-50: #ffeff6;
  --color-black-hearted-100: #f8e1e9;
  --color-black-hearted-200: #e9cbd5;
  --color-black-hearted-300: #d0acb9;
  --color-black-hearted-400: #ba91a1;
  --color-black-hearted-500: #a47789;
  --color-black-hearted-600: #8b6574;
  --color-black-hearted-700: #6f515d;
  --color-black-hearted-800: #523b45;
  --color-black-hearted-900: #392830;
  --color-black-hearted-950: #23161c;
}

SCSS

$black-hearted: #331322;
$black-hearted-rgb: 51, 19, 34;
$black-hearted-light: mix(#fff, $black-hearted, 20%);
$black-hearted-dark: mix(#000, $black-hearted, 20%);

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