#2D66D6

CSS

:root {
  --god-of-rain: #2d66d6;
  --god-of-rain-rgb: 45 102 214;
  --god-of-rain-oklch: oklch(0.538 0.183 262);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(220 67% 51%);
  border-color: oklch(0.538 0.183 262);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #2d66d6;
  --color-god-of-rain-50: #dbf6ff;
  --color-god-of-rain-100: #c9e8ff;
  --color-god-of-rain-200: #acd3ff;
  --color-god-of-rain-300: #87b5ff;
  --color-god-of-rain-400: #609aff;
  --color-god-of-rain-500: #3d7efd;
  --color-god-of-rain-600: #356bd5;
  --color-god-of-rain-700: #2a56ab;
  --color-god-of-rain-800: #183f80;
  --color-god-of-rain-900: #0f2c5b;
  --color-god-of-rain-950: #03183e;
}

SCSS

$god-of-rain: #2d66d6;
$god-of-rain-rgb: 45, 102, 214;
$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);
}