#3C64D7

CSS

:root {
  --god-of-rain: #3c64d7;
  --god-of-rain-rgb: 60 100 215;
  --god-of-rain-oklch: oklch(0.54 0.182 266);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(225 66% 54%);
  border-color: oklch(0.54 0.182 266);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3c64d7;
  --color-god-of-rain-50: #dff4ff;
  --color-god-of-rain-100: #cee7ff;
  --color-god-of-rain-200: #b3d2ff;
  --color-god-of-rain-300: #8fb3ff;
  --color-god-of-rain-400: #6b98ff;
  --color-god-of-rain-500: #4c7bfd;
  --color-god-of-rain-600: #4168d5;
  --color-god-of-rain-700: #3454ac;
  --color-god-of-rain-800: #203e80;
  --color-god-of-rain-900: #152a5b;
  --color-god-of-rain-950: #07173e;
}

SCSS

$god-of-rain: #3c64d7;
$god-of-rain-rgb: 60, 100, 215;
$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);
}