#5370C7

CSS

:root {
  --god-of-rain: #5370c7;
  --god-of-rain-rgb: 83 112 199;
  --god-of-rain-oklch: oklch(0.565 0.139 267.9);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(225 51% 55%);
  border-color: oklch(0.565 0.139 267.9);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #5370c7;
  --color-god-of-rain-50: #e5f4ff;
  --color-god-of-rain-100: #d6e7ff;
  --color-god-of-rain-200: #bdd2ff;
  --color-god-of-rain-300: #9cb4ff;
  --color-god-of-rain-400: #7b9af0;
  --color-god-of-rain-500: #5f7fe1;
  --color-god-of-rain-600: #506cbe;
  --color-god-of-rain-700: #405699;
  --color-god-of-rain-800: #2b4072;
  --color-god-of-rain-900: #1d2c50;
  --color-god-of-rain-950: #0d1936;
}

SCSS

$god-of-rain: #5370c7;
$god-of-rain-rgb: 83, 112, 199;
$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);
}