#4169C1

CSS

:root {
  --god-of-rain: #4169c1;
  --god-of-rain-rgb: 65 105 193;
  --god-of-rain-oklch: oklch(0.537 0.145 263.8);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(221 51% 51%);
  border-color: oklch(0.537 0.145 263.8);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4169c1;
  --color-god-of-rain-50: #e2f5ff;
  --color-god-of-rain-100: #d1e8ff;
  --color-god-of-rain-200: #b7d3ff;
  --color-god-of-rain-300: #94b6ff;
  --color-god-of-rain-400: #729cf4;
  --color-god-of-rain-500: #5381e5;
  --color-god-of-rain-600: #476ec1;
  --color-god-of-rain-700: #38589b;
  --color-god-of-rain-800: #254174;
  --color-god-of-rain-900: #192d52;
  --color-god-of-rain-950: #0a1937;
}

SCSS

$god-of-rain: #4169c1;
$god-of-rain-rgb: 65, 105, 193;
$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);
}