#4865CB

CSS

:root {
  --god-of-rain: #4865cb;
  --god-of-rain-rgb: 72 101 203;
  --god-of-rain-oklch: oklch(0.539 0.161 268.6);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(227 56% 54%);
  border-color: oklch(0.539 0.161 268.6);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4865cb;
  --color-god-of-rain-50: #e3f4ff;
  --color-god-of-rain-100: #d3e6ff;
  --color-god-of-rain-200: #bad1ff;
  --color-god-of-rain-300: #98b2ff;
  --color-god-of-rain-400: #7798fd;
  --color-god-of-rain-500: #5a7cf0;
  --color-god-of-rain-600: #4d69ca;
  --color-god-of-rain-700: #3d54a3;
  --color-god-of-rain-800: #293e7a;
  --color-god-of-rain-900: #1b2b56;
  --color-god-of-rain-950: #0c183a;
}

SCSS

$god-of-rain: #4865cb;
$god-of-rain-rgb: 72, 101, 203;
$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);
}