#4B65CA

CSS

:root {
  --god-of-rain: #4b65ca;
  --god-of-rain-rgb: 75 101 202;
  --god-of-rain-oklch: oklch(0.54 0.159 269.6);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(228 55% 54%);
  border-color: oklch(0.54 0.159 269.6);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4b65ca;
  --color-god-of-rain-50: #e4f3ff;
  --color-god-of-rain-100: #d4e6ff;
  --color-god-of-rain-200: #bcd1ff;
  --color-god-of-rain-300: #9ab2ff;
  --color-god-of-rain-400: #7998fc;
  --color-god-of-rain-500: #5d7cee;
  --color-god-of-rain-600: #4f69c9;
  --color-god-of-rain-700: #3f54a1;
  --color-god-of-rain-800: #2a3e79;
  --color-god-of-rain-900: #1c2b55;
  --color-god-of-rain-950: #0d173a;
}

SCSS

$god-of-rain: #4b65ca;
$god-of-rain-rgb: 75, 101, 202;
$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);
}