#E41C36

CSS

:root {
  --red-handed: #e41c36;
  --red-handed-rgb: 228 28 54;
  --red-handed-oklch: oklch(0.588 0.226 22.9);
}

.element {
  color: var(--red-handed);
  background-color: hsl(352 79% 50%);
  border-color: oklch(0.588 0.226 22.9);
}

Tailwind CSS v4

@theme {
  --color-red-handed: #e41c36;
  --color-red-handed-50: #ffddd5;
  --color-red-handed-100: #ffcac2;
  --color-red-handed-200: #ffaca3;
  --color-red-handed-300: #ff827b;
  --color-red-handed-400: #ff565c;
  --color-red-handed-500: #f80736;
  --color-red-handed-600: #d2132f;
  --color-red-handed-700: #a91125;
  --color-red-handed-800: #7e081d;
  --color-red-handed-900: #590713;
  --color-red-handed-950: #3c0005;
}

SCSS

$red-handed: #e41c36;
$red-handed-rgb: 228, 28, 54;
$red-handed-light: mix(#fff, $red-handed, 20%);
$red-handed-dark: mix(#000, $red-handed, 20%);

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