#C05826

CSS

:root {
  --titian-red: #c05826;
  --titian-red-rgb: 192 88 38;
  --titian-red-oklch: oklch(0.583 0.147 43.6);
}

.element {
  color: var(--titian-red);
  background-color: hsl(19 67% 45%);
  border-color: oklch(0.583 0.147 43.6);
}

Tailwind CSS v4

@theme {
  --color-titian-red: #c05826;
  --color-titian-red-50: #ffe9d3;
  --color-titian-red-100: #ffd9bf;
  --color-titian-red-200: #ffc19f;
  --color-titian-red-300: #f69f76;
  --color-titian-red-400: #e57f52;
  --color-titian-red-500: #d35e25;
  --color-titian-red-600: #b25122;
  --color-titian-red-700: #8f401b;
  --color-titian-red-800: #6b2d14;
  --color-titian-red-900: #4b1f0c;
  --color-titian-red-950: #310e02;
}

SCSS

$titian-red: #c05826;
$titian-red-rgb: 192, 88, 38;
$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);
}