#A7B6DB

CSS

:root {
  --over-the-moon: #a7b6db;
  --over-the-moon-rgb: 167 182 219;
  --over-the-moon-oklch: oklch(0.777 0.056 267.8);
}

.element {
  color: var(--over-the-moon);
  background-color: hsl(223 42% 76%);
  border-color: oklch(0.777 0.056 267.8);
}

Tailwind CSS v4

@theme {
  --color-over-the-moon: #a7b6db;
  --color-over-the-moon-50: #eff5ff;
  --color-over-the-moon-100: #e0e8fb;
  --color-over-the-moon-200: #cbd4ed;
  --color-over-the-moon-300: #acb7d5;
  --color-over-the-moon-400: #909ec0;
  --color-over-the-moon-500: #7685ac;
  --color-over-the-moon-600: #647191;
  --color-over-the-moon-700: #505a74;
  --color-over-the-moon-800: #394256;
  --color-over-the-moon-900: #272e3c;
  --color-over-the-moon-950: #151a26;
}

SCSS

$over-the-moon: #a7b6db;
$over-the-moon-rgb: 167, 182, 219;
$over-the-moon-light: mix(#fff, $over-the-moon, 20%);
$over-the-moon-dark: mix(#000, $over-the-moon, 20%);

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