#D04A0B

CSS

:root {
  --mellow-mango: #d04a0b;
  --mellow-mango-rgb: 208 74 11;
  --mellow-mango-oklch: oklch(0.587 0.18 39.8);
}

.element {
  color: var(--mellow-mango);
  background-color: hsl(19 90% 43%);
  border-color: oklch(0.587 0.18 39.8);
}

Tailwind CSS v4

@theme {
  --color-mellow-mango: #d04a0b;
  --color-mellow-mango-50: #ffe5cd;
  --color-mellow-mango-100: #ffd5b9;
  --color-mellow-mango-200: #ffba97;
  --color-mellow-mango-300: #ff966b;
  --color-mellow-mango-400: #f47243;
  --color-mellow-mango-500: #e34c00;
  --color-mellow-mango-600: #bf4204;
  --color-mellow-mango-700: #9a3506;
  --color-mellow-mango-800: #732408;
  --color-mellow-mango-900: #511805;
  --color-mellow-mango-950: #360800;
}

SCSS

$mellow-mango: #d04a0b;
$mellow-mango-rgb: 208, 74, 11;
$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);
}