#A4507C

CSS

:root {
  --our-little-secret: #a4507c;
  --our-little-secret-rgb: 164 80 124;
  --our-little-secret-oklch: oklch(0.548 0.122 349.2);
}

.element {
  color: var(--our-little-secret);
  background-color: hsl(329 34% 48%);
  border-color: oklch(0.548 0.122 349.2);
}

Tailwind CSS v4

@theme {
  --color-our-little-secret: #a4507c;
  --color-our-little-secret-50: #ffe8f9;
  --color-our-little-secret-100: #ffd8ed;
  --color-our-little-secret-200: #febfda;
  --color-our-little-secret-300: #e89dbf;
  --color-our-little-secret-400: #d47faa;
  --color-our-little-secret-500: #c06193;
  --color-our-little-secret-600: #a2537c;
  --color-our-little-secret-700: #824263;
  --color-our-little-secret-800: #602f4a;
  --color-our-little-secret-900: #442034;
  --color-our-little-secret-950: #2b0f1f;
}

SCSS

$our-little-secret: #a4507c;
$our-little-secret-rgb: 164, 80, 124;
$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);
}