Taccia are currently owned by Nakabayashi in Japan. They were founded in California, though. Taccia have several lines of ink, including the Ukiyo-e collection (complex colors with shading), the Roughna collection (supposedly for sketching), the Lipstick collection, and the Jeans collection. But I’m really in love with their standard inks, which are $14/40ml in the US and cheaper in Asia. I haven’t seen prices in other countries. I bought a sample from Anderson Pens (now closed) a year and a half ago.
Sora Sky Blue (or just Sora, which is Japanese for sky) is a vibrant and saturated turquoise. Similar colors I’ve tried include
- Diamine Havasu Turquoise
- Waterman Inspired Blue
It doesn’t shade, but also doesn’t change color or vibrancy after a long writing session. It keeps up well with my fast writing in a TWSBI Diamond 580. I have only three writing samples for now.

Lines are crisp.

I am aware I need to photograph samples on flatter surfaces in the future (you can see the bending at the edges of the photographs distorting the letters). I took these photos on a music stand in a binder So I wouldn’t get my shadows all over them. Not ideal, but better than nothing.

The ink’s strength for me is its consistency. Sometimes I want an ink that remains one saturated color, and Sora is well-behaved. I’ll buy a bottle for my sky blue needs once I’ve finished this sample and my bottle of Havasu Turquoise.