#D93533

CSS

:root {
  --red-handed: #d93533;
  --red-handed-rgb: 217 53 51;
  --red-handed-oklch: oklch(0.584 0.201 26.6);
}

.element {
  color: var(--red-handed);
  background-color: hsl(1 69% 53%);
  border-color: oklch(0.584 0.201 26.6);
}

Tailwind CSS v4

@theme {
  --color-red-handed: #d93533;
  --color-red-handed-50: #ffe0d5;
  --color-red-handed-100: #ffcfc2;
  --color-red-handed-200: #ffb2a3;
  --color-red-handed-300: #ff8b7b;
  --color-red-handed-400: #ff645b;
  --color-red-handed-500: #ee3434;
  --color-red-handed-600: #c92f2e;
  --color-red-handed-700: #a22624;
  --color-red-handed-800: #79191c;
  --color-red-handed-900: #561012;
  --color-red-handed-950: #390205;
}

SCSS

$red-handed: #d93533;
$red-handed-rgb: 217, 53, 51;
$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);
}