Primary Blue

CSS

:root {
  --primary-blue: #0804f9;
  --primary-blue-rgb: 8 4 249;
  --primary-blue-oklch: oklch(0.446 0.306 264.6);
}

.element {
  color: var(--primary-blue);
  background-color: hsl(241 97% 50%);
  border-color: oklch(0.446 0.306 264.6);
}

Tailwind CSS v4

@theme {
  --color-primary-blue: #0804f9;
  --color-primary-blue-50: #cdf3ff;
  --color-primary-blue-100: #b9e4ff;
  --color-primary-blue-200: #98cdff;
  --color-primary-blue-300: #70a9ff;
  --color-primary-blue-400: #3f87ff;
  --color-primary-blue-500: #1a5bff;
  --color-primary-blue-600: #174fff;
  --color-primary-blue-700: #1140e0;
  --color-primary-blue-800: #002fa9;
  --color-primary-blue-900: #002178;
  --color-primary-blue-950: #000c55;
}

SCSS

$primary-blue: #0804f9;
$primary-blue-rgb: 8, 4, 249;
$primary-blue-light: mix(#fff, $primary-blue, 20%);
$primary-blue-dark: mix(#000, $primary-blue, 20%);

.element {
  color: $primary-blue;
  box-shadow: 0 0 0 2px rgba($primary-blue, 0.35);
}