#4666CA

CSS

:root {
  --god-of-rain: #4666ca;
  --god-of-rain-rgb: 70 102 202;
  --god-of-rain-oklch: oklch(0.54 0.159 267.5);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(225 55% 53%);
  border-color: oklch(0.54 0.159 267.5);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4666ca;
  --color-god-of-rain-50: #e3f4ff;
  --color-god-of-rain-100: #d2e6ff;
  --color-god-of-rain-200: #b9d2ff;
  --color-god-of-rain-300: #97b3ff;
  --color-god-of-rain-400: #7599fc;
  --color-god-of-rain-500: #587dee;
  --color-god-of-rain-600: #4b6ac9;
  --color-god-of-rain-700: #3b55a2;
  --color-god-of-rain-800: #273e79;
  --color-god-of-rain-900: #1a2b55;
  --color-god-of-rain-950: #0b183a;
}

SCSS

$god-of-rain: #4666ca;
$god-of-rain-rgb: 70, 102, 202;
$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);
}