#121A0C

CSS

:root {
  --memorial-black: #121a0c;
  --memorial-black-rgb: 18 26 12;
  --memorial-black-oklch: oklch(0.205 0.029 132.7);
}

.element {
  color: var(--memorial-black);
  background-color: hsl(94 37% 7%);
  border-color: oklch(0.205 0.029 132.7);
}

Tailwind CSS v4

@theme {
  --color-memorial-black: #121a0c;
  --color-memorial-black-50: #f2f7ef;
  --color-memorial-black-100: #e4eae1;
  --color-memorial-black-200: #cfd7cb;
  --color-memorial-black-300: #b1bbac;
  --color-memorial-black-400: #98a291;
  --color-memorial-black-500: #7f8b77;
  --color-memorial-black-600: #6b7565;
  --color-memorial-black-700: #565e51;
  --color-memorial-black-800: #3f453a;
  --color-memorial-black-900: #2b2f28;
  --color-memorial-black-950: #191c16;
}

SCSS

$memorial-black: #121a0c;
$memorial-black-rgb: 18, 26, 12;
$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);
}