#3B6ABF

CSS

:root {
  --god-of-rain: #3b6abf;
  --god-of-rain-rgb: 59 106 191;
  --god-of-rain-oklch: oklch(0.535 0.143 261.2);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(219 53% 49%);
  border-color: oklch(0.535 0.143 261.2);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3b6abf;
  --color-god-of-rain-50: #e0f6ff;
  --color-god-of-rain-100: #cfe9ff;
  --color-god-of-rain-200: #b4d5ff;
  --color-god-of-rain-300: #91b7ff;
  --color-god-of-rain-400: #6d9df2;
  --color-god-of-rain-500: #4d83e4;
  --color-god-of-rain-600: #426fc0;
  --color-god-of-rain-700: #34599a;
  --color-god-of-rain-800: #224173;
  --color-god-of-rain-900: #162d51;
  --color-god-of-rain-950: #081a36;
}

SCSS

$god-of-rain: #3b6abf;
$god-of-rain-rgb: 59, 106, 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);
}