#121A11

CSS

:root {
  --memorial-black: #121a11;
  --memorial-black-rgb: 18 26 17;
  --memorial-black-oklch: oklch(0.206 0.021 141.9);
}

.element {
  color: var(--memorial-black);
  background-color: hsl(113 21% 8%);
  border-color: oklch(0.206 0.021 141.9);
}

Tailwind CSS v4

@theme {
  --color-memorial-black: #121a11;
  --color-memorial-black-50: #f2f7f1;
  --color-memorial-black-100: #e4eae3;
  --color-memorial-black-200: #cfd7cf;
  --color-memorial-black-300: #b1bab1;
  --color-memorial-black-400: #98a296;
  --color-memorial-black-500: #7f8a7d;
  --color-memorial-black-600: #6b756a;
  --color-memorial-black-700: #565d55;
  --color-memorial-black-800: #3f443d;
  --color-memorial-black-900: #2b2f2a;
  --color-memorial-black-950: #181c18;
}

SCSS

$memorial-black: #121a11;
$memorial-black-rgb: 18, 26, 17;
$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);
}