#376AC3

CSS

:root {
  --god-of-rain: #376ac3;
  --god-of-rain-rgb: 55 106 195;
  --god-of-rain-oklch: oklch(0.536 0.15 260.7);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(218 56% 49%);
  border-color: oklch(0.536 0.15 260.7);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #376ac3;
  --color-god-of-rain-50: #dff6ff;
  --color-god-of-rain-100: #cde9ff;
  --color-god-of-rain-200: #b2d5ff;
  --color-god-of-rain-300: #8eb7ff;
  --color-god-of-rain-400: #6a9df6;
  --color-god-of-rain-500: #4983e8;
  --color-god-of-rain-600: #3e6fc3;
  --color-god-of-rain-700: #31599d;
  --color-god-of-rain-800: #1f4175;
  --color-god-of-rain-900: #152d53;
  --color-god-of-rain-950: #061a37;
}

SCSS

$god-of-rain: #376ac3;
$god-of-rain-rgb: 55, 106, 195;
$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);
}