#CC3F6F

CSS

:root {
  --dark-pink: #cc3f6f;
  --dark-pink-rgb: 204 63 111;
  --dark-pink-oklch: oklch(0.583 0.18 3.9);
}

.element {
  color: var(--dark-pink);
  background-color: hsl(340 58% 52%);
  border-color: oklch(0.583 0.18 3.9);
}

Tailwind CSS v4

@theme {
  --color-dark-pink: #cc3f6f;
  --color-dark-pink-50: #ffe0ed;
  --color-dark-pink-100: #ffcfdf;
  --color-dark-pink-200: #ffb3c8;
  --color-dark-pink-300: #ff8ea9;
  --color-dark-pink-400: #f26a92;
  --color-dark-pink-500: #e04178;
  --color-dark-pink-600: #bd3966;
  --color-dark-pink-700: #982d52;
  --color-dark-pink-800: #711f3e;
  --color-dark-pink-900: #50152a;
  --color-dark-pink-950: #350518;
}

SCSS

$dark-pink: #cc3f6f;
$dark-pink-rgb: 204, 63, 111;
$dark-pink-light: mix(#fff, $dark-pink, 20%);
$dark-pink-dark: mix(#000, $dark-pink, 20%);

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