#4B2726

CSS

:root {
  --brown-coffee: #4b2726;
  --brown-coffee-rgb: 75 39 38;
  --brown-coffee-oklch: oklch(0.32 0.054 22.2);
}

.element {
  color: var(--brown-coffee);
  background-color: hsl(2 33% 22%);
  border-color: oklch(0.32 0.054 22.2);
}

Tailwind CSS v4

@theme {
  --color-brown-coffee: #4b2726;
  --color-brown-coffee-50: #fff0ee;
  --color-brown-coffee-100: #fae1df;
  --color-brown-coffee-200: #ebccc9;
  --color-brown-coffee-300: #d2adaa;
  --color-brown-coffee-400: #bd9290;
  --color-brown-coffee-500: #a77876;
  --color-brown-coffee-600: #8e6664;
  --color-brown-coffee-700: #715150;
  --color-brown-coffee-800: #543b3a;
  --color-brown-coffee-900: #3a2828;
  --color-brown-coffee-950: #241616;
}

SCSS

$brown-coffee: #4b2726;
$brown-coffee-rgb: 75, 39, 38;
$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);
}