Pilot Iroshizuku inks are inspired by the colors of the natural world. Pilot provides the following guide to the colors made available in cartridges:

Ama-iro (sky blue): This shade of blue conjures up the color of a clear blue sky, unblemished by
even a wisp of cloud.

Asa-gao (morning glory): The summer Morning Glory has long been a familiar favorite of the
Japanese. This shade of blue evokes the refreshing color of a newly blooming Morning Glory.

Fuyu-syogun (rigor of winter): A personification of the harsh and cold winter, this shade of gray is a
nod to the cold, clear air of the severe winter season.

Ku-jaku (peacock): This shade of green calls to the vivid feathers of the richly multicolored
peacock.

Kon-peki (cerulean): The deep blue is inspired by the color of a vast and clear summer day.

Momiji (autumn leaves): This shade of red conjures up the bright red leaves that are iconic of
Japanese autumn.

Mursaski-shikibu (Japanese beautyberry): Murasaki Shikibu grows wild throughout Japan, adorned
with purple-colored berries. This purple matches the shade of the rich Japanese Beautyberry.

Shin-ryoku (forest green): A beautiful nod to the unchanging color of a dense evergreen forest in a
long winter.

Shin-kai (deep sea): This blue evokes the deep ocean, its primeval life-source untouched by the
rays of the sun.

Take-sumi (bamboo charcoal): Take-sumi has been used in Japanese homes since ancient times as
a water purifier, to control humidity levels and for its healing properties. The black emulates the
deep, rich black of take-sumi, so familiar to the Japanese.

Tsuki-yo (moonlight): The shade of blue comes from the image of a night sky, dimly illuminated by
moonlight.

Yama-budo (crimson glory vine): This shade of red is a nod to the bright and ripe fruit of the wild,
yet subdued, crimson glory vine.