#5168B8

CSS

:root {
  --god-of-rain: #5168b8;
  --god-of-rain-rgb: 81 104 184;
  --god-of-rain-oklch: oklch(0.538 0.128 269.6);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(227 42% 52%);
  border-color: oklch(0.538 0.128 269.6);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #5168b8;
  --color-god-of-rain-50: #e8f4ff;
  --color-god-of-rain-100: #d8e6ff;
  --color-god-of-rain-200: #c0d2ff;
  --color-god-of-rain-300: #a0b4f9;
  --color-god-of-rain-400: #809aea;
  --color-god-of-rain-500: #6580da;
  --color-god-of-rain-600: #566cb8;
  --color-god-of-rain-700: #445694;
  --color-god-of-rain-800: #2f406f;
  --color-god-of-rain-900: #202c4e;
  --color-god-of-rain-950: #101934;
}

SCSS

$god-of-rain: #5168b8;
$god-of-rain-rgb: 81, 104, 184;
$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);
}