#D8373A

CSS

:root {
  --red-handed: #d8373a;
  --red-handed-rgb: 216 55 58;
  --red-handed-oklch: oklch(0.585 0.198 24.9);
}

.element {
  color: var(--red-handed);
  background-color: hsl(359 67% 53%);
  border-color: oklch(0.585 0.198 24.9);
}

Tailwind CSS v4

@theme {
  --color-red-handed: #d8373a;
  --color-red-handed-50: #ffe0d7;
  --color-red-handed-100: #ffcfc4;
  --color-red-handed-200: #ffb3a6;
  --color-red-handed-300: #ff8c7f;
  --color-red-handed-400: #fe6560;
  --color-red-handed-500: #ed363c;
  --color-red-handed-600: #c83134;
  --color-red-handed-700: #a12729;
  --color-red-handed-800: #781a1f;
  --color-red-handed-900: #551115;
  --color-red-handed-950: #390206;
}

SCSS

$red-handed: #d8373a;
$red-handed-rgb: 216, 55, 58;
$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);
}