A purple leaning blue
P.W. Akkerman #04 Nassaus Blauw is similar to #00 Royal Akkermanblauw; it’s a bit redder than #00, and unlike the unruly sheen on the #00, Nassaus Blauw presents controlled red sheen at the edge of where the ink pools in heavily saturated areas and only on thicker wet strokes with my nib and paper combos. It is close to Sailor Ultramarine and Nioi-Sumire; it is a bit bluer and more saturated that Diamine Imperial Blue. It cleans out of my pens easily, but I needed elbow grease to remove it from my inky fingers. It’s a pleasure writing with it, and reading back the notes. It’s not very saturated in drier pens, but is still saturated enough for me to use when proofreading because it offers enough contrast against black text. I would use this ink when writing to someone I like, hoping that its red component would reveal enough of my feelings without having to overtly state them. But I could be wrong, so don’t read any advice into this—no advice, of any type!