#DE2555

CSS

:root {
  --howling-pink: #de2555;
  --howling-pink-rgb: 222 37 85;
  --howling-pink-oklch: oklch(0.587 0.215 13.6);
}

.element {
  color: var(--howling-pink);
  background-color: hsl(344 74% 51%);
  border-color: oklch(0.587 0.215 13.6);
}

Tailwind CSS v4

@theme {
  --color-howling-pink: #de2555;
  --color-howling-pink-50: #ffdde1;
  --color-howling-pink-100: #ffcbd0;
  --color-howling-pink-200: #ffadb5;
  --color-howling-pink-300: #ff8392;
  --color-howling-pink-400: #ff5978;
  --color-howling-pink-500: #f21c5a;
  --color-howling-pink-600: #cd1e4d;
  --color-howling-pink-700: #a5193d;
  --color-howling-pink-800: #7b0f2e;
  --color-howling-pink-900: #570a1f;
  --color-howling-pink-950: #3a000f;
}

SCSS

$howling-pink: #de2555;
$howling-pink-rgb: 222, 37, 85;
$howling-pink-light: mix(#fff, $howling-pink, 20%);
$howling-pink-dark: mix(#000, $howling-pink, 20%);

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