I love dark blue eyeliner, and the only dark blue eyeliner I could fine that wasn't ridiculously priced was wet n wild.  I bought a whole box of the dark blue pencils and I love them!  They don't fade away during the day and they don't transfer to the rest of my eye.  Wherever I put the eyeliner, it stays.  And I love the color!  Everyone carries blue and black and green, but for some reason the blue was so hard to find, until I found wet n wild!