#3A2B18

CSS

:root {
  --cola: #3a2b18;
  --cola-rgb: 58 43 24;
  --cola-oklch: oklch(0.301 0.038 72.1);
}

.element {
  color: var(--cola);
  background-color: hsl(34 41% 16%);
  border-color: oklch(0.301 0.038 72.1);
}

Tailwind CSS v4

@theme {
  --color-cola: #3a2b18;
  --color-cola-50: #fcf4ea;
  --color-cola-100: #f0e6da;
  --color-cola-200: #ded2c3;
  --color-cola-300: #c3b5a3;
  --color-cola-400: #ad9b86;
  --color-cola-500: #96836b;
  --color-cola-600: #7f6f5b;
  --color-cola-700: #665848;
  --color-cola-800: #4b4034;
  --color-cola-900: #342c24;
  --color-cola-950: #201912;
}

SCSS

$cola: #3a2b18;
$cola-rgb: 58, 43, 24;
$cola-light: mix(#fff, $cola, 20%);
$cola-dark: mix(#000, $cola, 20%);

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