#A7ADD5

CSS

:root {
  --over-the-moon: #a7add5;
  --over-the-moon-rgb: 167 173 213;
  --over-the-moon-oklch: oklch(0.757 0.058 278.2);
}

.element {
  color: var(--over-the-moon);
  background-color: hsl(232 35% 75%);
  border-color: oklch(0.757 0.058 278.2);
}

Tailwind CSS v4

@theme {
  --color-over-the-moon: #a7add5;
  --color-over-the-moon-50: #f1f4ff;
  --color-over-the-moon-100: #e4e6fb;
  --color-over-the-moon-200: #cfd2ed;
  --color-over-the-moon-300: #b1b5d5;
  --color-over-the-moon-400: #969cc1;
  --color-over-the-moon-500: #7d83ad;
  --color-over-the-moon-600: #6a6f92;
  --color-over-the-moon-700: #555975;
  --color-over-the-moon-800: #3d4157;
  --color-over-the-moon-900: #2a2d3c;
  --color-over-the-moon-950: #171a26;
}

SCSS

$over-the-moon: #a7add5;
$over-the-moon-rgb: 167, 173, 213;
$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);
}