#E41F13

CSS

:root {
  --red-wrath-of-zeus: #e41f13;
  --red-wrath-of-zeus-rgb: 228 31 19;
  --red-wrath-of-zeus-oklch: oklch(0.587 0.227 29.5);
}

.element {
  color: var(--red-wrath-of-zeus);
  background-color: hsl(3 85% 48%);
  border-color: oklch(0.587 0.227 29.5);
}

Tailwind CSS v4

@theme {
  --color-red-wrath-of-zeus: #e41f13;
  --color-red-wrath-of-zeus-50: #ffdecd;
  --color-red-wrath-of-zeus-100: #ffccb9;
  --color-red-wrath-of-zeus-200: #ffae97;
  --color-red-wrath-of-zeus-300: #ff846b;
  --color-red-wrath-of-zeus-400: #ff5846;
  --color-red-wrath-of-zeus-500: #f91005;
  --color-red-wrath-of-zeus-600: #d2170d;
  --color-red-wrath-of-zeus-700: #a9140b;
  --color-red-wrath-of-zeus-800: #7f0a0c;
  --color-red-wrath-of-zeus-900: #5a0808;
  --color-red-wrath-of-zeus-950: #3c0000;
}

SCSS

$red-wrath-of-zeus: #e41f13;
$red-wrath-of-zeus-rgb: 228, 31, 19;
$red-wrath-of-zeus-light: mix(#fff, $red-wrath-of-zeus, 20%);
$red-wrath-of-zeus-dark: mix(#000, $red-wrath-of-zeus, 20%);

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