#5E1700

CSS

:root {
  --blood-of-zeus: #5e1700;
  --blood-of-zeus-rgb: 94 23 0;
  --blood-of-zeus-oklch: oklch(0.322 0.107 37.2);
}

.element {
  color: var(--blood-of-zeus);
  background-color: hsl(15 100% 18%);
  border-color: oklch(0.322 0.107 37.2);
}

Tailwind CSS v4

@theme {
  --color-blood-of-zeus: #5e1700;
  --color-blood-of-zeus-50: #ffecdf;
  --color-blood-of-zeus-100: #ffddce;
  --color-blood-of-zeus-200: #fec5b3;
  --color-blood-of-zeus-300: #e8a58f;
  --color-blood-of-zeus-400: #d58770;
  --color-blood-of-zeus-500: #c26a51;
  --color-blood-of-zeus-600: #a45b45;
  --color-blood-of-zeus-700: #844837;
  --color-blood-of-zeus-800: #623428;
  --color-blood-of-zeus-900: #45231b;
  --color-blood-of-zeus-950: #2c120b;
}

SCSS

$blood-of-zeus: #5e1700;
$blood-of-zeus-rgb: 94, 23, 0;
$blood-of-zeus-light: mix(#fff, $blood-of-zeus, 20%);
$blood-of-zeus-dark: mix(#000, $blood-of-zeus, 20%);

.element {
  color: $blood-of-zeus;
  box-shadow: 0 0 0 2px rgba($blood-of-zeus, 0.35);
}