document - dark blue

De Atramentis Document Dark Blue is a pigmented, permanent fountain pen ink renowned for its high waterproofness and lightfastness with only a slight shift to blue-grey under prolonged light exposure. It offers a wet flow, quick drying on most papers, and minimal shading, making it ideal for reliable everyday writing and sketching where documents need to withstand water or fading. This ink suits professionals, students, and fountain pen users prioritizing durability over artistic effects.