Citadel Macragge Blue Base paint is designed to give a smooth, solid blue color over a substrate and for that reason this will almost always be the first paint you use on a miniature. Shake the blue paint before using (you can make this easier by adding an agitator ball).
The blue paint can be a bit thick sometimes and then you just add a few drops of water on your pallet. You really don't need a lot of water. Something to watch out for is to make sure you don't apply too much paint so that you don't start hiding details.
Another important functionality of this blue paint is that it not only covers the undercoat, but also covers other colors. So if you later miss something about this color, you can easily paint over it with this Macragge Blue base paint.
The color of Citadel Macragge Blue (21-08) is similar to: Old Citadel Mordian Blue; Vallejo Game Color Heavy Blue (72143); Vallejo Model Color Prussian Blue (70965); Instar Deep Water Blue; Reaper Master Breonne Blue (9055); Scale75 Navy Blue Matt.