#3A69C6

CSS

:root {
  --god-of-rain: #3a69c6;
  --god-of-rain-rgb: 58 105 198;
  --god-of-rain-oklch: oklch(0.537 0.154 262.3);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(220 55% 50%);
  border-color: oklch(0.537 0.154 262.3);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3a69c6;
  --color-god-of-rain-50: #dff6ff;
  --color-god-of-rain-100: #cee8ff;
  --color-god-of-rain-200: #b3d4ff;
  --color-god-of-rain-300: #90b6ff;
  --color-god-of-rain-400: #6c9cf9;
  --color-god-of-rain-500: #4b81eb;
  --color-god-of-rain-600: #406ec6;
  --color-god-of-rain-700: #33589f;
  --color-god-of-rain-800: #214177;
  --color-god-of-rain-900: #162d54;
  --color-god-of-rain-950: #071938;
}

SCSS

$god-of-rain: #3a69c6;
$god-of-rain-rgb: 58, 105, 198;
$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);
}