#4566CB

CSS

:root {
  --god-of-rain: #4566cb;
  --god-of-rain-rgb: 69 102 203;
  --god-of-rain-oklch: oklch(0.54 0.161 267.2);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(225 56% 53%);
  border-color: oklch(0.54 0.161 267.2);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4566cb;
  --color-god-of-rain-50: #e2f4ff;
  --color-god-of-rain-100: #d2e6ff;
  --color-god-of-rain-200: #b8d2ff;
  --color-god-of-rain-300: #96b3ff;
  --color-god-of-rain-400: #7499fd;
  --color-god-of-rain-500: #577df0;
  --color-god-of-rain-600: #4a6aca;
  --color-god-of-rain-700: #3b55a2;
  --color-god-of-rain-800: #273e79;
  --color-god-of-rain-900: #1a2b56;
  --color-god-of-rain-950: #0b183a;
}

SCSS

$god-of-rain: #4566cb;
$god-of-rain-rgb: 69, 102, 203;
$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);
}