#DFD4ED

CSS

:root {
  --dust-of-the-moon: #dfd4ed;
  --dust-of-the-moon-rgb: 223 212 237;
  --dust-of-the-moon-oklch: oklch(0.886 0.036 305.5);
}

.element {
  color: var(--dust-of-the-moon);
  background-color: hsl(266 41% 88%);
  border-color: oklch(0.886 0.036 305.5);
}

Tailwind CSS v4

@theme {
  --color-dust-of-the-moon: #dfd4ed;
  --color-dust-of-the-moon-50: #f8f3fd;
  --color-dust-of-the-moon-100: #ebe5f1;
  --color-dust-of-the-moon-200: #d8d0e0;
  --color-dust-of-the-moon-300: #bcb3c6;
  --color-dust-of-the-moon-400: #a399b0;
  --color-dust-of-the-moon-500: #8c809a;
  --color-dust-of-the-moon-600: #766d82;
  --color-dust-of-the-moon-700: #5f5768;
  --color-dust-of-the-moon-800: #453f4d;
  --color-dust-of-the-moon-900: #302c35;
  --color-dust-of-the-moon-950: #1c1920;
}

SCSS

$dust-of-the-moon: #dfd4ed;
$dust-of-the-moon-rgb: 223, 212, 237;
$dust-of-the-moon-light: mix(#fff, $dust-of-the-moon, 20%);
$dust-of-the-moon-dark: mix(#000, $dust-of-the-moon, 20%);

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