#A94C79

CSS

:root {
  --our-little-secret: #a94c79;
  --our-little-secret-rgb: 169 76 121;
  --our-little-secret-oklch: oklch(0.548 0.132 352.1);
}

.element {
  color: var(--our-little-secret);
  background-color: hsl(331 38% 48%);
  border-color: oklch(0.548 0.132 352.1);
}

Tailwind CSS v4

@theme {
  --color-our-little-secret: #a94c79;
  --color-our-little-secret-50: #ffe6f8;
  --color-our-little-secret-100: #ffd6eb;
  --color-our-little-secret-200: #ffbdd8;
  --color-our-little-secret-300: #ed9bbc;
  --color-our-little-secret-400: #d97ca6;
  --color-our-little-secret-500: #c65c8f;
  --color-our-little-secret-600: #a74f79;
  --color-our-little-secret-700: #863f61;
  --color-our-little-secret-800: #632d49;
  --color-our-little-secret-900: #461e32;
  --color-our-little-secret-950: #2d0e1e;
}

SCSS

$our-little-secret: #a94c79;
$our-little-secret-rgb: 169, 76, 121;
$our-little-secret-light: mix(#fff, $our-little-secret, 20%);
$our-little-secret-dark: mix(#000, $our-little-secret, 20%);

.element {
  color: $our-little-secret;
  box-shadow: 0 0 0 2px rgba($our-little-secret, 0.35);
}