#3A67CF

CSS

:root {
  --god-of-rain: #3a67cf;
  --god-of-rain-rgb: 58 103 207;
  --god-of-rain-oklch: oklch(0.54 0.169 264);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(222 61% 52%);
  border-color: oklch(0.54 0.169 264);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3a67cf;
  --color-god-of-rain-50: #dff5ff;
  --color-god-of-rain-100: #cee7ff;
  --color-god-of-rain-200: #b2d3ff;
  --color-god-of-rain-300: #8fb4ff;
  --color-god-of-rain-400: #6a9aff;
  --color-god-of-rain-500: #4b7ef4;
  --color-god-of-rain-600: #406bce;
  --color-god-of-rain-700: #3356a6;
  --color-god-of-rain-800: #203f7c;
  --color-god-of-rain-900: #152c57;
  --color-god-of-rain-950: #07183b;
}

SCSS

$god-of-rain: #3a67cf;
$god-of-rain-rgb: 58, 103, 207;
$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);
}