#4668BF

CSS

:root {
  --god-of-rain: #4668bf;
  --god-of-rain-rgb: 70 104 191;
  --god-of-rain-oklch: oklch(0.536 0.142 265.8);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(223 49% 51%);
  border-color: oklch(0.536 0.142 265.8);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #4668bf;
  --color-god-of-rain-50: #e3f5ff;
  --color-god-of-rain-100: #d3e7ff;
  --color-god-of-rain-200: #bad3ff;
  --color-god-of-rain-300: #98b5ff;
  --color-god-of-rain-400: #769bf2;
  --color-god-of-rain-500: #5980e3;
  --color-god-of-rain-600: #4c6dc0;
  --color-god-of-rain-700: #3c579a;
  --color-god-of-rain-800: #284073;
  --color-god-of-rain-900: #1b2c51;
  --color-god-of-rain-950: #0c1936;
}

SCSS

$god-of-rain: #4668bf;
$god-of-rain-rgb: 70, 104, 191;
$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);
}