#3A69C3

CSS

:root {
  --god-of-rain: #3a69c3;
  --god-of-rain-rgb: 58 105 195;
  --god-of-rain-oklch: oklch(0.535 0.15 261.9);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(219 54% 50%);
  border-color: oklch(0.535 0.15 261.9);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3a69c3;
  --color-god-of-rain-50: #dff6ff;
  --color-god-of-rain-100: #cfe8ff;
  --color-god-of-rain-200: #b4d4ff;
  --color-god-of-rain-300: #90b6ff;
  --color-god-of-rain-400: #6c9df6;
  --color-god-of-rain-500: #4c82e8;
  --color-god-of-rain-600: #416ec4;
  --color-god-of-rain-700: #34589d;
  --color-god-of-rain-800: #214175;
  --color-god-of-rain-900: #162d53;
  --color-god-of-rain-950: #071938;
}

SCSS

$god-of-rain: #3a69c3;
$god-of-rain-rgb: 58, 105, 195;
$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);
}