Grey fountain pen inks are among the most underrated in the hobby. Writers who discover a good grey tend to become devoted to it — it occupies the space between black (which can read as demanding) and the coloured inks (which can read as casual), producing writing that's readable and serious while carrying an understated refinement that black doesn't have. Grey is the colour of graphite, of pencil marks, of drafts and ideas: it signals thinking in progress.
The grey spectrum
Grey fountain pen inks vary considerably in tone and warmth. At the light end: pale, subtle greys that require a medium or broad nib to remain comfortable to read. At the dark end: near-blacks that reveal their grey quality only in good light or broad nibs. In between: mid-tone greys that balance character with practical legibility. And across the whole spectrum: warm greys (with red or orange undertones) versus cool greys (with blue undertones) — a distinction most visible on cream or ivory paper.
Best all-around grey: Pilot Iroshizuku Kiri-same
Kiri-same (Autumn Rain) is the community standard for grey fountain pen inks. It's a warm, medium-dark grey — dark enough to read easily in fine nibs without being so dark it reads as black, and warm-toned enough to feel inviting rather than cold. It shades subtly, has above-average water resistance for a dye-based ink, and is easy to clean from pens. On Tomoe River paper it reveals a very slight shading effect; on cream paper it takes on a softer warmth.
If you want one grey ink that covers every practical use case — everyday writing, note-taking, correspondence, journaling — Kiri-same is it. It's the Iroshizuku grey, and it's the benchmark against which all other grey inks are measured.
Best cool grey: Pilot Iroshizuku Fuyu-syogun
Fuyu-syogun (Old Man Winter) is a cool, slightly blue-leaning grey — darker or lighter depending on the pen's flow, which makes it one of the more variable and characterful inks in the range. In a dry pen it can read as a medium, slightly steely grey; in a wet pen it opens into something more expressive. Above-average water resistance for a dye-based ink. One of the fastest-drying Iroshizuku inks. A sophisticated choice for writers who want a grey with a cooler, more modern feeling than Kiri-same.
Best dark charcoal grey: Diamine Graphite
Diamine Graphite is a deep, neutral-to-cool grey that in fine nibs approaches near-black. It's one of the most saturated grey inks available at the Diamine price point — dark enough to read without difficulty in extra fine nibs, complex enough to be interesting rather than merely dark. Low water resistance (like most Diamine inks), but excellent for journaling and writing on quality paper. For artists, its water-solubility makes it useful for wash effects — diluted with a wet brush it produces soft, charcoal-like gradients.
Best light grey
Very light grey inks are challenging: beautiful in broad nibs, potentially difficult to read in fine nibs on standard papers. For writers who want a pale, refined grey: the Iroshizuku range's lightest greys (Fuyu-syogun in a dry pen approaches this territory) are worth testing in your usual nib size before committing to a bottle. If legibility is a concern, using a medium nib in a paler grey often resolves it.
Best shimmer grey: J. Herbin 1670 Stormy Grey
J. Herbin's 1670 Stormy Grey is a dark grey with gold shimmer particles — a combination that produces something between the look of antique ink and the visual energy of a shimmer ink. For special-occasion writing, correspondence, or any writing where the grey should have personality as well as sophistication: Stormy Grey is a distinctive choice. Follow standard shimmer ink care — roll before filling, clean regularly, store filled pens horizontally.
Grey inks for artists
For artists working in fountain pen ink, grey is an important colour for shading, value studies, and adding depth to line work. The key properties for artistic grey use: water-solubility (for wash effects) and a neutral or warm tone (which tends to blend more naturally with other colours than cool greys). Diamine Graphite's low water resistance actually works in its favour for art use — applied and then brushed with water, it produces smooth graduated washes. Iroshizuku Kiri-same's warm tone makes it more versatile as an artistic grey than cooler options.
Grey and paper
Grey inks respond more visibly to paper tone than most colours. On bright white paper, a warm grey like Kiri-same reads relatively neutrally. On cream or ivory paper (Midori MD, Life Noble), the same ink develops a warmer, more aged quality — closer to the colour of pencil marks on old manuscript paper. On Tomoe River, shading effects become visible even in moderately wet applications.
If you're trying to decide between a warm and a cool grey ink, test on the paper you'll actually use. The difference in feeling between a warm Kiri-same on cream MD paper and a cool Fuyu-syogun on white Rhodia is significant.
Browse all grey fountain pen inks at The Journal Shop, including Pilot Iroshizuku and Diamine.
Where to start: browse our fountain pen inks and fountain pens at The Journal Shop.
