#3A64D9

CSS

:root {
  --god-of-rain: #3a64d9;
  --god-of-rain-rgb: 58 100 217;
  --god-of-rain-oklch: oklch(0.541 0.186 265.6);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(224 68% 54%);
  border-color: oklch(0.541 0.186 265.6);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3a64d9;
  --color-god-of-rain-50: #def4ff;
  --color-god-of-rain-100: #cde7ff;
  --color-god-of-rain-200: #b1d2ff;
  --color-god-of-rain-300: #8eb3ff;
  --color-god-of-rain-400: #6998ff;
  --color-god-of-rain-500: #4a7bff;
  --color-god-of-rain-600: #3f68d7;
  --color-god-of-rain-700: #3253ad;
  --color-god-of-rain-800: #1f3d82;
  --color-god-of-rain-900: #142a5c;
  --color-god-of-rain-950: #07173e;
}

SCSS

$god-of-rain: #3a64d9;
$god-of-rain-rgb: 58, 100, 217;
$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);
}