#EF66D1

CSS

:root {
  --death-of-a-star: #ef66d1;
  --death-of-a-star-rgb: 239 102 209;
  --death-of-a-star-oklch: oklch(0.714 0.207 336.9);
}

.element {
  color: var(--death-of-a-star);
  background-color: hsl(313 81% 67%);
  border-color: oklch(0.714 0.207 336.9);
}

Tailwind CSS v4

@theme {
  --color-death-of-a-star: #ef66d1;
  --color-death-of-a-star-50: #ffdfff;
  --color-death-of-a-star-100: #ffcdff;
  --color-death-of-a-star-200: #ffb1f2;
  --color-death-of-a-star-300: #fa8ada;
  --color-death-of-a-star-400: #e766ca;
  --color-death-of-a-star-500: #d43bb7;
  --color-death-of-a-star-600: #b3349a;
  --color-death-of-a-star-700: #90297c;
  --color-death-of-a-star-800: #6a1d5e;
  --color-death-of-a-star-900: #4b1342;
  --color-death-of-a-star-950: #31042a;
}

SCSS

$death-of-a-star: #ef66d1;
$death-of-a-star-rgb: 239, 102, 209;
$death-of-a-star-light: mix(#fff, $death-of-a-star, 20%);
$death-of-a-star-dark: mix(#000, $death-of-a-star, 20%);

.element {
  color: $death-of-a-star;
  box-shadow: 0 0 0 2px rgba($death-of-a-star, 0.35);
}