#1B1C0A

CSS

:root {
  --memorial-black: #1b1c0a;
  --memorial-black-rgb: 27 28 10;
  --memorial-black-oklch: oklch(0.22 0.031 111.5);
}

.element {
  color: var(--memorial-black);
  background-color: hsl(63 47% 7%);
  border-color: oklch(0.22 0.031 111.5);
}

Tailwind CSS v4

@theme {
  --color-memorial-black: #1b1c0a;
  --color-memorial-black-50: #f5f6ec;
  --color-memorial-black-100: #e7e9dd;
  --color-memorial-black-200: #d4d6c7;
  --color-memorial-black-300: #b7b9a7;
  --color-memorial-black-400: #9fa18c;
  --color-memorial-black-500: #868971;
  --color-memorial-black-600: #727460;
  --color-memorial-black-700: #5b5c4c;
  --color-memorial-black-800: #434337;
  --color-memorial-black-900: #2e2f26;
  --color-memorial-black-950: #1b1b14;
}

SCSS

$memorial-black: #1b1c0a;
$memorial-black-rgb: 27, 28, 10;
$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);
}