Namiki Blue is a color that not a lot of people are familiar with, but it’s a great color! A nice, dark, pure blue, and very water resistant. I will say that my review here is probably showing a lighter color than what this ink will show in a non-italic pen. This ink has a red sheen to it when put on heavily, similar to Diamine Majestic Blue and PR Electric DC Blue.
If you’re not a big fan of the extended dry times of the other two inks, Namiki Blue may just fit your bill. It is a tad more work to clean from your pen because of the red sheen the ink has, it has a tendency to want to coat the feed of your pen. No harm, really, just more work to clean. This is a nice looking and working ink that I can easily recommend.