#4066CC

CSS

:root {
  --god-of-rain: #4066cc;
  --god-of-rain-rgb: 64 102 204;
  --god-of-rain-oklch: oklch(0.538 0.164 265.8);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(224 58% 53%);
  border-color: oklch(0.538 0.164 265.8);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4066cc;
  --color-god-of-rain-50: #e1f5ff;
  --color-god-of-rain-100: #d0e7ff;
  --color-god-of-rain-200: #b6d2ff;
  --color-god-of-rain-300: #93b4ff;
  --color-god-of-rain-400: #7099ff;
  --color-god-of-rain-500: #527ef1;
  --color-god-of-rain-600: #466bcb;
  --color-god-of-rain-700: #3755a4;
  --color-god-of-rain-800: #243f7a;
  --color-god-of-rain-900: #182b56;
  --color-god-of-rain-950: #09183a;
}

SCSS

$god-of-rain: #4066cc;
$god-of-rain-rgb: 64, 102, 204;
$god-of-rain-light: mix(#fff, $god-of-rain, 20%);
$god-of-rain-dark: mix(#000, $god-of-rain, 20%);

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