Halite Blue

CSS

:root {
  --halite-blue: #09324a;
  --halite-blue-rgb: 9 50 74;
  --halite-blue-oklch: oklch(0.303 0.061 239.8);
}

.element {
  color: var(--halite-blue);
  background-color: hsl(202 78% 16%);
  border-color: oklch(0.303 0.061 239.8);
}

Tailwind CSS v4

@theme {
  --color-halite-blue: #09324a;
  --color-halite-blue-50: #e7f8ff;
  --color-halite-blue-100: #d7ebfb;
  --color-halite-blue-200: #bed8ed;
  --color-halite-blue-300: #9cbcd5;
  --color-halite-blue-400: #7da4bf;
  --color-halite-blue-500: #608cab;
  --color-halite-blue-600: #527690;
  --color-halite-blue-700: #415f74;
  --color-halite-blue-800: #2e4655;
  --color-halite-blue-900: #1f303c;
  --color-halite-blue-950: #0f1c25;
}

SCSS

$halite-blue: #09324a;
$halite-blue-rgb: 9, 50, 74;
$halite-blue-light: mix(#fff, $halite-blue, 20%);
$halite-blue-dark: mix(#000, $halite-blue, 20%);

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