#4064D7

CSS

:root {
  --god-of-rain: #4064d7;
  --god-of-rain-rgb: 64 100 215;
  --god-of-rain-oklch: oklch(0.542 0.181 267);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(226 65% 55%);
  border-color: oklch(0.542 0.181 267);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4064d7;
  --color-god-of-rain-50: #e0f4ff;
  --color-god-of-rain-100: #cfe6ff;
  --color-god-of-rain-200: #b4d1ff;
  --color-god-of-rain-300: #92b2ff;
  --color-god-of-rain-400: #6e97ff;
  --color-god-of-rain-500: #507afc;
  --color-god-of-rain-600: #4468d5;
  --color-god-of-rain-700: #3653ab;
  --color-god-of-rain-800: #233d80;
  --color-god-of-rain-900: #172a5b;
  --color-god-of-rain-950: #08173e;
}

SCSS

$god-of-rain: #4064d7;
$god-of-rain-rgb: 64, 100, 215;
$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);
}