#3368CC

CSS

:root {
  --god-of-rain: #3368cc;
  --god-of-rain-rgb: 51 104 204;
  --god-of-rain-oklch: oklch(0.537 0.165 261.6);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(219 60% 50%);
  border-color: oklch(0.537 0.165 261.6);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3368cc;
  --color-god-of-rain-50: #ddf6ff;
  --color-god-of-rain-100: #cce8ff;
  --color-god-of-rain-200: #b0d4ff;
  --color-god-of-rain-300: #8bb6ff;
  --color-god-of-rain-400: #669cff;
  --color-god-of-rain-500: #4480f2;
  --color-god-of-rain-600: #3a6dcc;
  --color-god-of-rain-700: #2e57a4;
  --color-god-of-rain-800: #1c407a;
  --color-god-of-rain-900: #122c57;
  --color-god-of-rain-950: #05193a;
}

SCSS

$god-of-rain: #3368cc;
$god-of-rain-rgb: 51, 104, 204;
$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);
}