Diamine Beau Blue is a light blue ink that is almost too light for regular writing. I have used this ink in some letters and I wonder if anyone will have trouble reading my letters. Regardless, this is a happy colour that I quite enjoy. The shade of blue reminds me of Pilot Iroshizuku Ama Iro. However as you can see in the picture below Ama Iro is much darker. Dry time is pretty good even on good Muji paper. There is no to little shading on the ink. There are some show through and bleed through.