#3F6ABD

CSS

:root {
  --god-of-rain: #3f6abd;
  --god-of-rain-rgb: 63 106 189;
  --god-of-rain-oklch: oklch(0.536 0.139 262.1);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(220 50% 49%);
  border-color: oklch(0.536 0.139 262.1);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3f6abd;
  --color-god-of-rain-50: #e1f6ff;
  --color-god-of-rain-100: #d1e8ff;
  --color-god-of-rain-200: #b6d4ff;
  --color-god-of-rain-300: #93b6ff;
  --color-god-of-rain-400: #719df0;
  --color-god-of-rain-500: #5283e1;
  --color-god-of-rain-600: #466fbe;
  --color-god-of-rain-700: #375999;
  --color-god-of-rain-800: #244172;
  --color-god-of-rain-900: #182d50;
  --color-god-of-rain-950: #091a35;
}

SCSS

$god-of-rain: #3f6abd;
$god-of-rain-rgb: 63, 106, 189;
$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);
}