#A6BDD8

CSS

:root {
  --sail-into-the-horizon: #a6bdd8;
  --sail-into-the-horizon-rgb: 166 189 216;
  --sail-into-the-horizon-oklch: oklch(0.79 0.046 252.5);
}

.element {
  color: var(--sail-into-the-horizon);
  background-color: hsl(212 39% 75%);
  border-color: oklch(0.79 0.046 252.5);
}

Tailwind CSS v4

@theme {
  --color-sail-into-the-horizon: #a6bdd8;
  --color-sail-into-the-horizon-50: #ecf6ff;
  --color-sail-into-the-horizon-100: #dee9f7;
  --color-sail-into-the-horizon-200: #c7d6e8;
  --color-sail-into-the-horizon-300: #a8b9cf;
  --color-sail-into-the-horizon-400: #8ba1ba;
  --color-sail-into-the-horizon-500: #7189a4;
  --color-sail-into-the-horizon-600: #5f748b;
  --color-sail-into-the-horizon-700: #4c5c6f;
  --color-sail-into-the-horizon-800: #374452;
  --color-sail-into-the-horizon-900: #252f39;
  --color-sail-into-the-horizon-950: #141b23;
}

SCSS

$sail-into-the-horizon: #a6bdd8;
$sail-into-the-horizon-rgb: 166, 189, 216;
$sail-into-the-horizon-light: mix(#fff, $sail-into-the-horizon, 20%);
$sail-into-the-horizon-dark: mix(#000, $sail-into-the-horizon, 20%);

.element {
  color: $sail-into-the-horizon;
  box-shadow: 0 0 0 2px rgba($sail-into-the-horizon, 0.35);
}