#C54D6F

CSS

:root {
  --dark-pink: #c54d6f;
  --dark-pink-rgb: 197 77 111;
  --dark-pink-oklch: oklch(0.588 0.156 5.7);
}

.element {
  color: var(--dark-pink);
  background-color: hsl(343 51% 54%);
  border-color: oklch(0.588 0.156 5.7);
}

Tailwind CSS v4

@theme {
  --color-dark-pink: #c54d6f;
  --color-dark-pink-50: #ffe3ed;
  --color-dark-pink-100: #ffd3de;
  --color-dark-pink-200: #ffb9c8;
  --color-dark-pink-300: #fb94a9;
  --color-dark-pink-400: #e97391;
  --color-dark-pink-500: #d65077;
  --color-dark-pink-600: #b54565;
  --color-dark-pink-700: #913750;
  --color-dark-pink-800: #6c273c;
  --color-dark-pink-900: #4c1a29;
  --color-dark-pink-950: #320a17;
}

SCSS

$dark-pink: #c54d6f;
$dark-pink-rgb: 197, 77, 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);
}