#5366BB

CSS

:root {
  --god-of-rain: #5366bb;
  --god-of-rain-rgb: 83 102 187;
  --god-of-rain-oklch: oklch(0.537 0.134 271.7);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(229 43% 53%);
  border-color: oklch(0.537 0.134 271.7);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #5366bb;
  --color-god-of-rain-50: #e8f3ff;
  --color-god-of-rain-100: #d9e6ff;
  --color-god-of-rain-200: #c2d1ff;
  --color-god-of-rain-300: #a1b2fc;
  --color-god-of-rain-400: #8299ee;
  --color-god-of-rain-500: #677ede;
  --color-god-of-rain-600: #586bbb;
  --color-god-of-rain-700: #465597;
  --color-god-of-rain-800: #303f71;
  --color-god-of-rain-900: #212b4f;
  --color-god-of-rain-950: #101835;
}

SCSS

$god-of-rain: #5366bb;
$god-of-rain-rgb: 83, 102, 187;
$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);
}