#D34605

CSS

:root {
  --mellow-mango: #d34605;
  --mellow-mango-rgb: 211 70 5;
  --mellow-mango-oklch: oklch(0.587 0.187 38.7);
}

.element {
  color: var(--mellow-mango);
  background-color: hsl(19 95% 42%);
  border-color: oklch(0.587 0.187 38.7);
}

Tailwind CSS v4

@theme {
  --color-mellow-mango: #d34605;
  --color-mellow-mango-50: #ffe4cd;
  --color-mellow-mango-100: #ffd4b8;
  --color-mellow-mango-200: #ffb996;
  --color-mellow-mango-300: #ff9469;
  --color-mellow-mango-400: #f76f41;
  --color-mellow-mango-500: #e64700;
  --color-mellow-mango-600: #c23e00;
  --color-mellow-mango-700: #9c3203;
  --color-mellow-mango-800: #752206;
  --color-mellow-mango-900: #531705;
  --color-mellow-mango-950: #370600;
}

SCSS

$mellow-mango: #d34605;
$mellow-mango-rgb: 211, 70, 5;
$mellow-mango-light: mix(#fff, $mellow-mango, 20%);
$mellow-mango-dark: mix(#000, $mellow-mango, 20%);

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