The Best Japanese Fountain Pen Inks Available in the UK (2026)
Japanese ink makers approach fountain pen ink the way Japanese craftsmen approach everything: with an obsessive attention to quality, consistency, and aesthetic beauty. The best Japanese inks don't just write well — they behave beautifully in the pen, produce colours of extraordinary depth and character, and have names that are, in themselves, a small act of poetry.
Here are the best Japanese fountain pen inks available in the UK right now, from everyday workhorses to bottles you'll open slowly and savour.
Pilot Iroshizuku
The most celebrated fountain pen ink range in the world. Pilot's Iroshizuku collection — "iroshizuku" translates roughly as "glistening drops of colour" — comprises 24 inks, each named after a Japanese landscape, natural phenomenon, or cultural image. Tsuki-yo (moonlit night) is a teal-green with extraordinary depth. Kon-peki (cerulean sky) is a vivid blue that makes every nib it touches look better. Yama-budo (wild grape) is a deep wine-red that sheens green.
Every Iroshizuku ink is well-behaved in the pen: it flows easily, dries without fuss, and cleans out without drama. They're not just beautiful — they're practical. This combination of everyday reliability and exceptional aesthetics is why Iroshizuku is the standard by which other inks are measured.
The 50ml bottles are beautifully designed and worth owning for their own sake.
Start with: Tsuki-yo (teal), Kon-peki (blue), or Yama-budo (wine-red) depending on your colour preference.
Sailor Shikiori
Sailor's Shikiori collection — "shikiori" means "four seasons weaving" — are seasonal inks that capture the colours of Japanese nature across the year. Spring sakura pinks, summer deep blues, autumn russet-reds, winter pale greys. They're inks that make you feel something when you look at the bottle name before you've even opened it.
Sailor inks are renowned for their exceptional quality and consistency. The Shikiori inks produce beautiful shading — the variation between light and dark on a single stroke — and several exhibit subtle sheening on high-quality paper like Tomoe River or MD Paper.
Start with: Yodaki (a deep autumn teal) or Ama-iro (a serene sky blue), depending on season.
Kyoto Ink (Kyo No Oto)
The Kyo No Oto range captures the traditional colours of Kyoto — the old capital, where Japan's most refined aesthetics were developed over centuries. These are inks named for cultural concepts: Ruri-iro (lapis lazuli colour), Moegi-iro (fresh green), Sakuranezumi (cherry blossom grey). Each one is a story.
The inks themselves are beautifully saturated, shade well on quality paper, and feel appropriately considered — like something designed to be used slowly and deliberately.
Start with: Ruri-iro (a deep blue with purple undertones) or Moegi-iro (a fresh spring green).
Sailor Ink Studio
If Shikiori is Sailor's poetry collection, Ink Studio is their laboratory. Over 100 colours, each numbered rather than named, ranging from straightforward blues and blacks to extraordinary sheening purple-golds and shimmering blue-greens. Ink Studio is for the collector who wants options — or for the writer who has found, through Iroshizuku and Shikiori, that they have a taste for ink hunting.
Many Ink Studio colours exhibit strong sheening and shading on Tomoe River paper. They are not everyday inks — they reward quality paper and intentional use.
A Note on Using Japanese Inks
Japanese inks are generally well-behaved and pen-safe. They clean out easily and don't stain pens. For best results, use them on quality paper — Tomoe River, MD Paper, or LIFE Noble — where their shading and sheening properties can shine. On cheaper papers, many of their most beautiful qualities simply don't appear.
If you're new to fountain pen ink and want to see what all the fuss is about, start with a bottle of Iroshizuku in a colour that appeals to you. Use it in whatever pen you have. Write on whatever paper you have. Then get a Hobonichi Techo or a sheet of fountain pen friendly paper and try it again. The difference will be immediately obvious.
Browse our full range of fountain pen inks and Japanese stationery at The Journal Shop — UK stock, free delivery over £35. See also our Japanese stationery brands guide.
Frequently Asked Questions
What is the most popular Japanese fountain pen ink?
Pilot Iroshizuku is the most widely celebrated Japanese fountain pen ink range. Tsuki-yo (moonlit night teal) is consistently one of the most popular individual inks in the world.
Do Japanese inks work in any fountain pen?
Yes. Japanese fountain pen inks are generally well-behaved and work in any fountain pen. They're water-based, pen-safe, and clean out easily. Iroshizuku in particular is known for its excellent flow properties across all pen types.
What paper shows Japanese fountain pen inks best?
Tomoe River paper (used in Hobonichi notebooks) and MD Paper (used in Midori MD notebooks) show Japanese inks at their best — producing shading, sheening, and colour depth that faster-absorbing papers don't allow.
Are Sailor inks better than Pilot inks?
Both are exceptional and serve different purposes. Pilot Iroshizuku is more practical for everyday use — excellent flow, reliable dry times, easy to clean. Sailor inks (especially Ink Studio) tend to produce more dramatic shading and sheening effects but may be slightly less forgiving in some pens. Many fountain pen users keep both.
