This is a blue black ink but its very mysterious as it is written on the bottle itself. Its colour is a navy blue( its proportion is something like 1:2 ,where 1 being navy and 2 being blue ) not dark but its acceptable.When you write with it you will feel it will stain the other side of the page but as it dries its darkness lightens up and there is no staining on the other side.Flow is very good , no feathering , no staining (as ive mentioned before).Overall its a good ink.Would have given it more if its colour was more of something dark.
Been using this for 20 days , and the pen just stops in between while writing and you have to constantly shake the pen to get the ink flowing. Did not expect this from a designer.
Definately wouldnt advise to buy.
Ink is very bold black. Flow is good , ink colour is very thick , no staining on the other side of the paper,no feathering. Strongly recommended for those who want to do write something expressive. I'm in 12th so will be using this for my boards.