#73728A

CSS

:root {
  --flying-carpet: #73728a;
  --flying-carpet-rgb: 115 114 138;
  --flying-carpet-oklch: oklch(0.562 0.037 287.1);
}

.element {
  color: var(--flying-carpet);
  background-color: hsl(243 10% 49%);
  border-color: oklch(0.562 0.037 287.1);
}

Tailwind CSS v4

@theme {
  --color-flying-carpet: #73728a;
  --color-flying-carpet-50: #f4f4ff;
  --color-flying-carpet-100: #e7e6f4;
  --color-flying-carpet-200: #d3d2e3;
  --color-flying-carpet-300: #b6b5ca;
  --color-flying-carpet-400: #9c9cb4;
  --color-flying-carpet-500: #84839e;
  --color-flying-carpet-600: #706f85;
  --color-flying-carpet-700: #59596b;
  --color-flying-carpet-800: #41414f;
  --color-flying-carpet-900: #2d2d37;
  --color-flying-carpet-950: #1a1a22;
}

SCSS

$flying-carpet: #73728a;
$flying-carpet-rgb: 115, 114, 138;
$flying-carpet-light: mix(#fff, $flying-carpet, 20%);
$flying-carpet-dark: mix(#000, $flying-carpet, 20%);

.element {
  color: $flying-carpet;
  box-shadow: 0 0 0 2px rgba($flying-carpet, 0.35);
}