#A54F7B

CSS

:root {
  --our-little-secret: #a54f7b;
  --our-little-secret-rgb: 165 79 123;
  --our-little-secret-oklch: oklch(0.548 0.124 350);
}

.element {
  color: var(--our-little-secret);
  background-color: hsl(329 35% 48%);
  border-color: oklch(0.548 0.124 350);
}

Tailwind CSS v4

@theme {
  --color-our-little-secret: #a54f7b;
  --color-our-little-secret-50: #ffe7f9;
  --color-our-little-secret-100: #ffd8ec;
  --color-our-little-secret-200: #ffbfda;
  --color-our-little-secret-300: #e99dbe;
  --color-our-little-secret-400: #d57fa9;
  --color-our-little-secret-500: #c16092;
  --color-our-little-secret-600: #a3527b;
  --color-our-little-secret-700: #834163;
  --color-our-little-secret-800: #612f4a;
  --color-our-little-secret-900: #442033;
  --color-our-little-secret-950: #2c0f1f;
}

SCSS

$our-little-secret: #a54f7b;
$our-little-secret-rgb: 165, 79, 123;
$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);
}