#121A06

CSS

:root {
  --memorial-black: #121a06;
  --memorial-black-rgb: 18 26 6;
  --memorial-black-oklch: oklch(0.204 0.038 127.2);
}

.element {
  color: var(--memorial-black);
  background-color: hsl(84 63% 6%);
  border-color: oklch(0.204 0.038 127.2);
}

Tailwind CSS v4

@theme {
  --color-memorial-black: #121a06;
  --color-memorial-black-50: #f2f7ec;
  --color-memorial-black-100: #e4ebdd;
  --color-memorial-black-200: #cfd8c7;
  --color-memorial-black-300: #b1bca7;
  --color-memorial-black-400: #98a38b;
  --color-memorial-black-500: #7f8b70;
  --color-memorial-black-600: #6c765f;
  --color-memorial-black-700: #565e4c;
  --color-memorial-black-800: #3f4536;
  --color-memorial-black-900: #2b3025;
  --color-memorial-black-950: #191c14;
}

SCSS

$memorial-black: #121a06;
$memorial-black-rgb: 18, 26, 6;
$memorial-black-light: mix(#fff, $memorial-black, 20%);
$memorial-black-dark: mix(#000, $memorial-black, 20%);

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