#DE2653

CSS

:root {
  --howling-pink: #de2653;
  --howling-pink-rgb: 222 38 83;
  --howling-pink-oklch: oklch(0.587 0.215 14.5);
}

.element {
  color: var(--howling-pink);
  background-color: hsl(345 74% 51%);
  border-color: oklch(0.587 0.215 14.5);
}

Tailwind CSS v4

@theme {
  --color-howling-pink: #de2653;
  --color-howling-pink-50: #ffdde0;
  --color-howling-pink-100: #ffcbcf;
  --color-howling-pink-200: #ffadb4;
  --color-howling-pink-300: #ff8490;
  --color-howling-pink-400: #ff5a76;
  --color-howling-pink-500: #f21e58;
  --color-howling-pink-600: #cd1f4b;
  --color-howling-pink-700: #a5193b;
  --color-howling-pink-800: #7b0f2d;
  --color-howling-pink-900: #570a1f;
  --color-howling-pink-950: #3a000e;
}

SCSS

$howling-pink: #de2653;
$howling-pink-rgb: 222, 38, 83;
$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);
}