#3065DA

CSS

:root {
  --god-of-rain: #3065da;
  --god-of-rain-rgb: 48 101 218;
  --god-of-rain-oklch: oklch(0.54 0.188 263.2);
}

.element {
  color: var(--god-of-rain);
  background-color: hsl(221 70% 52%);
  border-color: oklch(0.54 0.188 263.2);
}

Tailwind CSS v4

@theme {
  --color-god-of-rain: #3065da;
  --color-god-of-rain-50: #dbf5ff;
  --color-god-of-rain-100: #c9e8ff;
  --color-god-of-rain-200: #add3ff;
  --color-god-of-rain-300: #88b4ff;
  --color-god-of-rain-400: #6299ff;
  --color-god-of-rain-500: #3f7cff;
  --color-god-of-rain-600: #3769d8;
  --color-god-of-rain-700: #2b54ae;
  --color-god-of-rain-800: #193e82;
  --color-god-of-rain-900: #102b5c;
  --color-god-of-rain-950: #04183f;
}

SCSS

$god-of-rain: #3065da;
$god-of-rain-rgb: 48, 101, 218;
$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);
}