Hi Def would be an almost dusty blue, were it not also a holo with a beautiful, polychromatic lustre. I found the application a bit tricky because it tended to pull and drag even before I could finish each coat. With quick application, though, it is workable, if not as smooth a formula as others from China Glaze. I think the color is worth the effort, though. This is shown with a topcoat of Seche Vite.