#191901

CSS

:root {
  --memorial-black: #191901;
  --memorial-black-rgb: 25 25 1;
  --memorial-black-oklch: oklch(0.207 0.043 109.6);
}

.element {
  color: var(--memorial-black);
  background-color: hsl(60 92% 5%);
  border-color: oklch(0.207 0.043 109.6);
}

Tailwind CSS v4

@theme {
  --color-memorial-black: #191901;
  --color-memorial-black-50: #f5f7e9;
  --color-memorial-black-100: #e8ead9;
  --color-memorial-black-200: #d4d6c2;
  --color-memorial-black-300: #b8baa1;
  --color-memorial-black-400: #a0a184;
  --color-memorial-black-500: #888968;
  --color-memorial-black-600: #737458;
  --color-memorial-black-700: #5c5d46;
  --color-memorial-black-800: #444432;
  --color-memorial-black-900: #2f2f22;
  --color-memorial-black-950: #1b1b11;
}

SCSS

$memorial-black: #191901;
$memorial-black-rgb: 25, 25, 1;
$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);
}