#BF541C

CSS

:root {
  --titian-red: #bf541c;
  --titian-red-rgb: 191 84 28;
  --titian-red-oklch: oklch(0.574 0.152 44.1);
}

.element {
  color: var(--titian-red);
  background-color: hsl(21 74% 43%);
  border-color: oklch(0.574 0.152 44.1);
}

Tailwind CSS v4

@theme {
  --color-titian-red: #bf541c;
  --color-titian-red-50: #ffe9d1;
  --color-titian-red-100: #ffd9be;
  --color-titian-red-200: #ffc09d;
  --color-titian-red-300: #f79e73;
  --color-titian-red-400: #e77d4e;
  --color-titian-red-500: #d55d1c;
  --color-titian-red-600: #b44f1b;
  --color-titian-red-700: #903f16;
  --color-titian-red-800: #6c2c10;
  --color-titian-red-900: #4c1e0a;
  --color-titian-red-950: #320d01;
}

SCSS

$titian-red: #bf541c;
$titian-red-rgb: 191, 84, 28;
$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);
}