#DD2D37

CSS

:root {
  --red-handed: #dd2d37;
  --red-handed-rgb: 221 45 55;
  --red-handed-oklch: oklch(0.585 0.21 24.2);
}

.element {
  color: var(--red-handed);
  background-color: hsl(357 72% 52%);
  border-color: oklch(0.585 0.21 24.2);
}

Tailwind CSS v4

@theme {
  --color-red-handed: #dd2d37;
  --color-red-handed-50: #ffdfd6;
  --color-red-handed-100: #ffcdc3;
  --color-red-handed-200: #ffb0a4;
  --color-red-handed-300: #ff887d;
  --color-red-handed-400: #ff5f5e;
  --color-red-handed-500: #f22938;
  --color-red-handed-600: #cc2731;
  --color-red-handed-700: #a41f27;
  --color-red-handed-800: #7b141e;
  --color-red-handed-900: #570d14;
  --color-red-handed-950: #3a0006;
}

SCSS

$red-handed: #dd2d37;
$red-handed-rgb: 221, 45, 55;
$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);
}