#4B66C4

CSS

:root {
  --god-of-rain: #4b66c4;
  --god-of-rain-rgb: 75 102 196;
  --god-of-rain-oklch: oklch(0.538 0.149 268.9);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(227 51% 53%);
  border-color: oklch(0.538 0.149 268.9);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4b66c4;
  --color-god-of-rain-50: #e5f4ff;
  --color-god-of-rain-100: #d5e6ff;
  --color-god-of-rain-200: #bcd1ff;
  --color-god-of-rain-300: #9bb3ff;
  --color-god-of-rain-400: #7a99f6;
  --color-god-of-rain-500: #5e7de8;
  --color-god-of-rain-600: #506ac4;
  --color-god-of-rain-700: #3f559d;
  --color-god-of-rain-800: #2b3f76;
  --color-god-of-rain-900: #1d2b53;
  --color-god-of-rain-950: #0d1838;
}

SCSS

$god-of-rain: #4b66c4;
$god-of-rain-rgb: 75, 102, 196;
$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);
}