Cult Pens Diamine Deep Dark Blue Ink

Cult Pens has a line up of Diamine Deep Dark inks - and they are deep and dark. Very fair price, good value in my humble opinion, and the colors are definitely saturated. They are heavy on the cleaning and maintenance because of the saturation but they also have a lot of sheen and character, if that is something you look for.

The Deep Dark Blue is basically a supersaturated blue-black, so it may not appeal to everyone. It isn't my favorite of the series because I tend to like lighter blues that have more shading, but it has some wicked sheen on it. Due to its maintenance in things that are not so easy to clean - like snug piston-fillers - I tend to not use this color and favor an easier-to-clean blue-black ink (Waterman Mysterious Blue). One thing that may appeal to some is that it holds some water resistance. I don't think it's actually water resistant, but the saturation allows some dye to stay behind even if the top layer is washed away.

Price: £5.90 inc VAT
Price: £4.92 ex VAT
Where to buy: Cult Pens

That is a pretty good looking swab with some deep blue-red sheen. It's not a boring color, at least.