Jacques Herbin Bleu Des Profondeurs was a gift for my grandson along with a LAMY dialog cc. He had told me he was searching for his favorite blue ink. I bought him Noodler’s 54th Massachusetts also just to give him more choices.

This ink is very close to several blue black samples I have tried…perhaps slightly brighter (barely)

It looks pretty dark with an extra-fine and fine nib, more so than a swatch of it - of course. Not as blue as Rue de la Verrerie.

A very good deep blue black ink. -with perhaps a bit of purple undertone too. I have this in a Lamy 2000 with a rather fat medium nib. This has been my go to blue for awhile. It’s a beautiful blue with authority.

I might be swapping it into my Pilot Custom 823 which has a much finer writing medium. then go with the Rue de Verrerier in the Lamy, it’s a more open blue by comparison. J.Herbin does a nice job with blue inks and the two mentioned are my favorites. They compliment each other nicely.

This ink despite being rather saturated and dark, I don’t see any issue with bleeding through on either Midori or Clairefontaine. A great blue a strong value

Very nice, rich color from this ink.

I have so much ink that sometimes I forget what I have! I rediscovered this ink in my collection and pulled it out to use in my Diplomat Aero Midnight Blue pen. Wow!! It's a lovely blue/black or very dark blue. It's wetter than average and flows really well. It doesn't really shade, but as it is a dark blue, that is to be expected. It's drying time is average on Rhodia paper. And the price is great. Great ink!!!

Herbin Bleu Des Profondeurs is a great deep blue color that works perfectly in professional settings.

A very good in for this dry pen, dark blue in this pen, near black in other pens. Better than Parker inks.

This color isn't my personal favorite, but it has the advantage of being an interesting shade of dark blue/navy. It has a little more green lean than some inks, putting it, IMO, in the same general category as Yonaga from Sailor. It's subtle, but it has the advantage of being relatively matte, for those who don't like having an overly sheeny ink. Despite the darkness, I think with a good wet and broad nib you can find some decent shading, especially out of a stub. It's more water resistant than the other colored Herbin inks, which also puts it in a class of its own next to Perle Noire. The color itself is probably just not quite the right shade for me, but it's a solid ink and a good one to have around.

I am nuts for blue inks. I know, they're basic but they can be amazing. And this is probably my favorite of them. It's well saturated, has great flow, and has a beautiful deep color. I absolutely love it and will make sure to always have a bottle on hand.

I have start to re-indulge in my fountain pen passion after 20 years. Started at age 6 with Hero Fountain pen. So start once again with beginners' pens. The ink is good. I have tested it with my Jinhao x450(M). I think the x450 have unnecessary high flow of ink. But i think the ink would be great with my Platinium Fine nib(02). The ink have a good shade and depth to it.

This is an ink my husband already has and loves. Easy buy!

Wonderful! A rich and well-saturated dark blue that behaves beautifully.

I am very happy with this ink, blue is beautiful, it also flows very well in my pen.

Bleu Des Profondeurs is a lovely dark and wet blue-black ink with excellent flow (with some lubrication, it seems). On regular computer paper, the ink is fairly water resistant (but not bulletproof!), once dry, though on Tomoe River paper, while writing is still legible, it doesn't have the same permanence as observed on the plain computer paper. I think this ink is great for not only more formal and business uses, but also in more general or personal contexts. Thanks a bunch Goulet Pens for stocking this ink!