#C1531E

CSS

:root {
  --titian-red: #c1531e;
  --titian-red-rgb: 193 83 30;
  --titian-red-oklch: oklch(0.576 0.155 42.8);
}

.element {
  color: var(--titian-red);
  background-color: hsl(20 73% 44%);
  border-color: oklch(0.576 0.155 42.8);
}

Tailwind CSS v4

@theme {
  --color-titian-red: #c1531e;
  --color-titian-red-50: #ffe8d1;
  --color-titian-red-100: #ffd8be;
  --color-titian-red-200: #ffbf9d;
  --color-titian-red-300: #f99d73;
  --color-titian-red-400: #e87c4e;
  --color-titian-red-500: #d65b1e;
  --color-titian-red-600: #b54e1c;
  --color-titian-red-700: #923e17;
  --color-titian-red-800: #6d2c11;
  --color-titian-red-900: #4d1d0b;
  --color-titian-red-950: #320d01;
}

SCSS

$titian-red: #c1531e;
$titian-red-rgb: 193, 83, 30;
$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);
}