Diamine Presidential Blue is a bit … a bit greyish, overcast, subtle … yet I liked it a lot when I reached for it within the #50shadesofbluechallenge
This ink is flying under the radar although it does behave well, is cheap and easy to get (as most standard Diamine inks are), cleans out nicely and is of an overall firm & serious colour.
(And maybe that exactly is the reason why I did not reach for it earlier again. “Boring” might be too harsh, but inspiring … no, that’s also not what Presidential Blue is.)
I liked it in a Pelikan M150 with a juicy medium nib.