For our Deep Blue leather, we currently work with MPG's Apollo and Conceria Walpier's Buttero. Both are a deep and dark blue that is difficult to capture in photos, but is certainly a blue in person! As with most leather options; every side may have slide variations in color from piece to piece.
Apollo and Buttero have a very slight matte glaze/sheen to them that gives them an incredibly clean look, while also being fairly durable. Outside of being a darker shade already, it will generally hold up better to marking and will patina less when compared to un-unglazed harness leather. With this, they do run a bit stiffer at first and require a good break in period like all of our leather offerings. Slight differences in leather thickness affect this break in period as well.