#4C2928

CSS

:root {
  --brown-coffee: #4c2928;
  --brown-coffee-rgb: 76 41 40;
  --brown-coffee-oklch: oklch(0.326 0.053 22.1);
}

.element {
  color: var(--brown-coffee);
  background-color: hsl(2 31% 23%);
  border-color: oklch(0.326 0.053 22.1);
}

Tailwind CSS v4

@theme {
  --color-brown-coffee: #4c2928;
  --color-brown-coffee-50: #fff0ee;
  --color-brown-coffee-100: #f9e2df;
  --color-brown-coffee-200: #eaccc9;
  --color-brown-coffee-300: #d1aeaa;
  --color-brown-coffee-400: #bc9390;
  --color-brown-coffee-500: #a67976;
  --color-brown-coffee-600: #8d6664;
  --color-brown-coffee-700: #715250;
  --color-brown-coffee-800: #533b3b;
  --color-brown-coffee-900: #3a2928;
  --color-brown-coffee-950: #241616;
}

SCSS

$brown-coffee: #4c2928;
$brown-coffee-rgb: 76, 41, 40;
$brown-coffee-light: mix(#fff, $brown-coffee, 20%);
$brown-coffee-dark: mix(#000, $brown-coffee, 20%);

.element {
  color: $brown-coffee;
  box-shadow: 0 0 0 2px rgba($brown-coffee, 0.35);
}