Green is one of the most rewarding colours in the fountain pen world — partly because so few people use it for everyday writing, which means it always stands out, and partly because the range of greens available is extraordinary. From vivid lime through soft sage to near-black forest green, there's a green ink for every mood and purpose. This guide covers the best across the full spectrum.
The breadth of green
Green is one of the most varied colour families in fountain pen inks. At one end: bright yellow-greens that read almost fluorescent. At the other: green-blacks that appear nearly black until held to the light. In between: a full spectrum of emeralds, teals, forest greens, olive greens, sage greens, and mint greens. The question isn't which green — it's which part of green.
Best deep forest green: Pilot Iroshizuku Shin-ryoku
Shin-ryoku (Deep Green) is the Iroshizuku range's signature green, and one of the most admired inks in the range. It's a deep, rich forest green that applies to the page with a blue-leaning quality and dries darker — a colour that belongs to deep woodland shadow rather than spring foliage. In wetter pens on Tomoe River paper, it develops a striking red-black sheen: the deep green and the reflected red are one of the more dramatic ink effect combinations available.
Well-behaved in all pens, easy to clean, and consistent — the Iroshizuku standard. A genuine all-rounder and the natural first choice for anyone wanting a serious everyday green.
Best teal-green: Pilot Iroshizuku Syo-ro
Syo-ro (Pine Tree Dew) sits at the complex border between green and teal — it reads differently in different lights, shifting between a deep green and a blue-green depending on paper and pen flow. It's the slowest-drying ink in the Iroshizuku range, which on smooth paper like Tomoe River means the most dramatic sheen and shading effects. A sophisticated, unusual green for those who want something that doesn't read as green at first glance.
Best vivid emerald: Pilot Iroshizuku Sui-gyoku
Sui-gyoku (Emerald Green) leans turquoise rather than pure green — vivid, saturated, and striking. It shades from a pale robin's-egg blue to a deep sea green and develops red sheen in generous applications. The most photogenic of the Iroshizuku greens and a popular choice for journaling where visual impact matters.
Best light chartreuse: Pilot Iroshizuku Hotaru-bi
Hotaru-bi (Firefly Light) is the range's most unusual green — a vivid yellow-green chartreuse inspired by the glow of fireflies. It reads almost neon in broad nibs on white paper and best shows its character in a wet pen. It's light enough that legibility in very fine nibs on small text can become an issue, but in a medium or broad nib writing larger it's one of the most distinctive inks in the hobby. Not an everyday ink — very much a statement colour.
Best bamboo forest green: Pilot Iroshizuku Chiku-rin
Chiku-rin (Bamboo Forest) is a fresh, yellow-toned green that belongs to spring growth rather than deep forest. It shades from pale lime to sap green and is one of the more readable light greens — bright without being illegible in fine nibs. A cheerful everyday choice for those who want green that feels alive rather than sombre.
Best for artists: Diamine Ancient Copper
Diamine Ancient Copper is technically a brown-russet ink, but its remarkable shading capacity means it pools from rust red to deep brown-green depending on concentration — making it beloved by sketchers for the range of marks possible from a single ink. Apply it with a wet brush over dried writing and it produces soft wash effects. Not a pure green, but an ink with green character in its deeper tones that rewards artistic use more than any straightforward green.
Best for waterproof green writing
Most green dye inks have low water resistance — they'll smear readily when wet. For permanent green writing: the Platinum Classic Forest Black is a modern iron gall ink that writes as a dark green and oxidises toward near-black over time, becoming significantly more water-resistant as it cures. Not a vivid green — it's a deep, serious ink — but the best option if permanence in a green tone is the requirement.
Best everyday green
For a green that works reliably on ordinary paper, dries reasonably quickly, and doesn't require any particular attention: Lamy Green is a practical, medium-dark green that runs dry enough for everyday note-taking on ordinary papers. Less characterful than the Iroshizuku range, but more forgiving on variable papers and in variable conditions.
Choosing your green
Start with Pilot Iroshizuku Shin-ryoku if you want a serious, versatile forest green with excellent performance across any pen or paper. Try Syo-ro if you want something more complex and unusual. Try Hotaru-bi if you want a show-stopping colour that most people won't have seen before.
Browse all green fountain pen inks at The Journal Shop.
Where to start: browse our fountain pen inks and fountain pens at The Journal Shop.
