#C6531B

CSS

:root {
  --titian-red: #c6531b;
  --titian-red-rgb: 198 83 27;
  --titian-red-oklch: oklch(0.584 0.16 42.6);
}

.element {
  color: var(--titian-red);
  background-color: hsl(20 76% 44%);
  border-color: oklch(0.584 0.16 42.6);
}

Tailwind CSS v4

@theme {
  --color-titian-red: #c6531b;
  --color-titian-red-50: #ffe8d0;
  --color-titian-red-100: #ffd8bc;
  --color-titian-red-200: #ffbe9b;
  --color-titian-red-300: #fb9b71;
  --color-titian-red-400: #eb7a4b;
  --color-titian-red-500: #d95815;
  --color-titian-red-600: #b74c16;
  --color-titian-red-700: #933c12;
  --color-titian-red-800: #6e2a0e;
  --color-titian-red-900: #4e1c09;
  --color-titian-red-950: #330c00;
}

SCSS

$titian-red: #c6531b;
$titian-red-rgb: 198, 83, 27;
$titian-red-light: mix(#fff, $titian-red, 20%);
$titian-red-dark: mix(#000, $titian-red, 20%);

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