#161900

CSS

:root {
  --memorial-black: #161900;
  --memorial-black-rgb: 22 25 0;
  --memorial-black-oklch: oklch(0.203 0.046 115.6);
}

.element {
  color: var(--memorial-black);
  background-color: hsl(67 100% 5%);
  border-color: oklch(0.203 0.046 115.6);
}

Tailwind CSS v4

@theme {
  --color-memorial-black: #161900;
  --color-memorial-black-50: #f4f7e8;
  --color-memorial-black-100: #e6ead9;
  --color-memorial-black-200: #d2d7c1;
  --color-memorial-black-300: #b5bba1;
  --color-memorial-black-400: #9da283;
  --color-memorial-black-500: #848a67;
  --color-memorial-black-600: #707558;
  --color-memorial-black-700: #5a5e46;
  --color-memorial-black-800: #424432;
  --color-memorial-black-900: #2e2f22;
  --color-memorial-black-950: #1a1c11;
}

SCSS

$memorial-black: #161900;
$memorial-black-rgb: 22, 25, 0;
$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);
}