#3868CC

CSS

:root {
  --god-of-rain: #3868cc;
  --god-of-rain-rgb: 56 104 204;
  --god-of-rain-oklch: oklch(0.539 0.164 262.8);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(221 59% 51%);
  border-color: oklch(0.539 0.164 262.8);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3868cc;
  --color-god-of-rain-50: #def5ff;
  --color-god-of-rain-100: #cde8ff;
  --color-god-of-rain-200: #b2d4ff;
  --color-god-of-rain-300: #8eb5ff;
  --color-god-of-rain-400: #699bfe;
  --color-god-of-rain-500: #4980f1;
  --color-god-of-rain-600: #3e6ccb;
  --color-god-of-rain-700: #3157a3;
  --color-god-of-rain-800: #1f407a;
  --color-god-of-rain-900: #142c56;
  --color-god-of-rain-950: #06193a;
}

SCSS

$god-of-rain: #3868cc;
$god-of-rain-rgb: 56, 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);
}