#AD597F

CSS

:root {
  --our-little-secret: #ad597f;
  --our-little-secret-rgb: 173 89 127;
  --our-little-secret-oklch: oklch(0.575 0.118 353);
}

.element {
  color: var(--our-little-secret);
  background-color: hsl(333 34% 51%);
  border-color: oklch(0.575 0.118 353);
}

Tailwind CSS v4

@theme {
  --color-our-little-secret: #ad597f;
  --color-our-little-secret-50: #ffe8f7;
  --color-our-little-secret-100: #ffd8ea;
  --color-our-little-secret-200: #fec0d7;
  --color-our-little-secret-300: #e89eba;
  --color-our-little-secret-400: #d480a4;
  --color-our-little-secret-500: #c0628d;
  --color-our-little-secret-600: #a25477;
  --color-our-little-secret-700: #82435f;
  --color-our-little-secret-800: #603047;
  --color-our-little-secret-900: #442031;
  --color-our-little-secret-950: #2b101d;
}

SCSS

$our-little-secret: #ad597f;
$our-little-secret-rgb: 173, 89, 127;
$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);
}