A very dark green with some minor shading. It's one of my new favorites and I'll probably be ordering a bottle. It's not so dark that you can't make out the color but definitely dark enough to be used professionally. Flow is medium however I've only tried it in a Parker 45 w/ Fine nib so far. I've experienced no bleed-through on almost all paper except minor bleed on copy paper. Water resistance is a letdown, it completely disappears after being submerged in water despite how dark the ink is.