#BD5A25

CSS

:root {
  --titian-red: #bd5a25;
  --titian-red-rgb: 189 90 37;
  --titian-red-oklch: oklch(0.581 0.143 45.6);
}

.element {
  color: var(--titian-red);
  background-color: hsl(21 67% 44%);
  border-color: oklch(0.581 0.143 45.6);
}

Tailwind CSS v4

@theme {
  --color-titian-red: #bd5a25;
  --color-titian-red-50: #ffead3;
  --color-titian-red-100: #ffdabf;
  --color-titian-red-200: #ffc29f;
  --color-titian-red-300: #f3a076;
  --color-titian-red-400: #e28152;
  --color-titian-red-500: #d06124;
  --color-titian-red-600: #b05321;
  --color-titian-red-700: #8d421a;
  --color-titian-red-800: #6a2f13;
  --color-titian-red-900: #4a200c;
  --color-titian-red-950: #310f01;
}

SCSS

$titian-red: #bd5a25;
$titian-red-rgb: 189, 90, 37;
$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);
}