Shimoyo - a dark blue-black.
The name of the ink color is embossed on each cartridge and come in a pack of three. Each cartridge set comes in its own white portable carrying case. Sailor fountain pen ink cartridges are proprietary, and only fit Sailor fountain pens that accept cartridges.
Sailor's Shikiori ("Four Seasons") line of fountain pen inks features vibrant and unique colors inspired by the beauty of each season in Japan. This smooth-flowing ink is specifically formulated to be safe and gentle for all fountain pens.