Pilot Iroshizuku Rikka (六花) — Icy Cool Blue, Medium Shading Fountain Pen Ink (50ml)

Pilot Iroshizuku Rikka (六花) — Icy Cool Blue, Medium Shading Fountain Pen Ink (50ml)

Pilot Iroshizuku Rikka (六花 — literally snow crystal, the poetic Japanese word for a snowflake) is a fountain pen ink from Pilot's Iroshizuku collection — Japan's most iconic premium ink series, formulated in-house by Pilot and bottled in the distinctive flat-sided glass flask that has become one of the most recognisable objects in fountain pen culture. Introduced in 2024 alongside To-Ro and Syun-Gyo as part of the Iroshizuku series expansion, Rikka is Pilot's official vision of winter light translated into ink: an icy, cool blue with a distinct teal or blue-green undertone, capturing the specific quality of a snowflake falling through clear winter sky — pure, luminous, and quietly intense. It is accompanied by a medium shading that transitions clearly from a lighter, more translucent blue in fine strokes to a richer, more saturated tone at pooling points, and a soft pink or red sheen that surfaces on premium papers under the right conditions. Rikka is a dye-based ink with no shimmer particles; its character comes entirely from colour, shading, and sheen.

The Iroshizuku series was conceived as a celebration of Japanese nature and landscape — each ink named for a plant, flower, or natural phenomenon, each colour formulated to translate that reference into something precise and vivid on the page. Rikka brings a winter voice to the series: a cool, clear blue that reviewers describe as quietly elegant, fantastically well-formulated, and immediately distinctive among blue inks for its specific icy teal quality. Available in both 15ml and 50ml glass bottles.

Available at Shosai (shosai.ca) in Gatineau / Ottawa — with in-store pickup (J9J 0K6) and Canada-wide shipping.

What Makes Iroshizuku Rikka Different

The blue ink space is vast, and within it, icy cool blues with teal undertones occupy a specific and appealing niche — clean and fresh without being corporate, cool and composed without being cold. Rikka occupies this space with the precision that defines the best Iroshizuku formulations. It is not a navy, not a sky blue, not a pure teal — it is something between all three: a medium blue with a clear green-cool inflection that gives it a luminous, crystalline quality on the page. Wet, it reads as a fuller, more saturated blue; dry, it settles into a cleaner, more translucent icy blue that suggests winter light rather than summer sky.

What makes Rikka compelling beyond its base colour is how it behaves at the intersection of shading and sheen. The medium shading gives writing genuine tonal depth — a visible gradient from lighter, more crystalline blue in hairlines to deeper, more saturated tone at pooling points — that rewards broader nibs and quality papers without being inaccessible at fine sizes. The soft pink sheen, visible on Tomoe River and similar premium surfaces, adds an unexpected warm edge to the ink's cool character: a subtle, elegant counterpoint that reviewers describe as quietly spectacular in the right light. Pilot describes Rikka as capturing the pure, intense clarity of a frost scene — and the ink delivers exactly that.

Colour Profile

Colour

Pilot Iroshizuku Rikka (六花) is a medium blue with a distinct cool teal or blue-green undertone — an icy, luminous blue that is neither a pure sky blue nor a saturated teal, but a clear, crystalline blue that reads as fresh, cool, and quietly distinctive on the page. In the bottle, it presents as a bright, cool blue with visible green complexity. On the page, it dries to a cleaner, more translucent icy blue: more saturated and slightly greener while wet; lighter and more purely blue as it dries, with the teal undertone remaining as a cool inflection that separates it from warmer or more neutral blues. The colour is fully legible at all nib sizes — bright and airy in fine strokes, richer and more saturated at broader coverage. Reviewers describe the base as icy cool blue, light-to-medium blue with a green hint, winter blue, and a colour with quiet elegance — distinctive in its specific cool-teal quality without being unusual or difficult to use.

Shading

Medium, clearly present, and well-expressed. Rikka shades with a visible tonal gradient that transitions from a lighter, more translucent, more purely blue tone in fine hairlines and light coverage to a deeper, more saturated blue at pooling points and heavier stroke widths. The shading is not dramatic in the manner of inks formulated primarily as shading showcase pieces, but it is clearly and consistently present across a range of nib sizes and paper types — a clean, well-defined gradient that adds dimension and crystalline depth to writing. On Tomoe River and similar premium slow-absorbing papers with medium to broad nibs, the full shading range from translucent light blue to richer deeper blue is most apparent and most rewarding. Fine nibs show a softer gradient, but the shading remains perceptible on quality papers. Reviewers describe the shading as moderate and expressive for a light-to-medium blue — more tonal depth than the cool, clean base colour suggests.

Sheen

Soft pink or red sheen, low intensity, paper-dependent. Rikka's sheen is a subtle secondary characteristic — a warm pink or pinkish-red edge that appears at stroke boundaries, pooling points, and across swab surfaces on smooth, slow-absorbing papers (Tomoe River and comparable premium surfaces) with sufficient ink volume. On Rhodia and comparable papers, the sheen is largely absent or very weak. On everyday copy paper, it is invisible. The sheen is not a dominant or spectacular effect in the manner of strong sheening inks — it is a soft, warm counterpoint to the ink's cool icy-blue base, visible most clearly in raking light and most rewarding on premium papers with broader writing. No shimmer; the pink-red effect is entirely sheen.

Ink Properties at a Glance

Flow

Smooth, consistent, and well-lubricated — characteristic of the Iroshizuku line as a whole. Rikka flows at a moderate, well-controlled rate across a wide range of nib types and pen bodies: not the wettest ink in the Iroshizuku line, but generously lubricated and reliably consistent. The moderate flow contributes to the ink's shading behaviour and ensures comfortable, practical performance across all pen configurations.

Dry Time

Moderate — approximately 20 seconds on quality papers with a medium nib. Rikka dries at a practical rate suitable for everyday use without smearing, while allowing sufficient wet time for shading and sheen to develop at pooling points.

Water Resistance

Medium. Rikka holds against light moisture exposure better than many dye-based inks, retaining some text legibility after minor water contact. Not waterproof and not suitable for documents requiring archival permanence.

Feathering and Bleed-Through

Minimal on quality papers (Rhodia, Tomoe River, Clairefontaine, Leuchtturm1917, Midori MD). Well-behaved and clean on fountain-pen-friendly papers. Some feathering may occur on standard copy paper or highly absorbent surfaces.

How to Get the Most Out of Iroshizuku Rikka

Recommended Paper

Rikka rewards smooth, slow-absorbing papers that allow the icy cool blue saturation, medium shading gradient, and soft pink sheen to develop fully together:

• Tomoe River (52gsm or 68gsm) — the premier recommendation for showcasing Rikka's full shading range and soft pink sheen; the slow absorption allows the tonal gradient from translucent light blue to richer deeper blue to develop at stroke edges and pooling points; the pink sheen appears most clearly here in raking light; the semi-transparent surface showcases the ink's crystalline colour depth beautifully
• Rhodia / Clairefontaine — the most reliable everyday pairing; the icy cool blue reads cleanly and with full saturation; shading clearly visible at medium to broad nib sizes; sheen largely absent but the cool, clean blue reads at its most luminous and precise; a strong practical daily option
• Leuchtturm1917 — good overall performance; full colour expression; shading clearly visible; the cool blue reads particularly well against cream-toned pages, where the teal undertone is most apparent
• Midori MD Paper — smooth, reliable performance; full colour development; shading expression good at medium to broad nib sizes; a natural pairing for journaling and personal writing
• Cosmo Air Light (Yamamoto Paper) — an excellent surface for maximum shading and sheen expression; the ultra-smooth, slow-absorbing surface allows the tonal gradient and pink sheen to develop at full intensity

Avoid highly absorbent papers. Fast-absorbing surfaces suppress shading and sheen, reducing Rikka's crystalline layered character to a clean but comparatively flat light blue.

Recommended Nibs

• Medium to Broad nibs — the primary recommendation for full shading and colour expression; more ink on the page activates the tonal gradient from translucent light blue to richer deeper blue and gives the soft pink sheen sufficient surface area to develop; the teal undertone becomes more perceptible and more beautiful at broader coverage
• Stub or Italic nibs — the variation between thick and thin strokes showcases the shading gradient most dramatically; the contrast between translucent light-blue hairlines and deeper, slightly sheening pooling points is Rikka's most expressive quality; highly effective for calligraphic and creative writing
• Fine nibs — the icy cool blue reads with full clarity and luminous freshness at fine sizes; a practical, elegant everyday pairing; shading softer but perceptible on quality papers; a strong choice for personal writing, poetry, and correspondence
• Extra-fine nibs — fully functional; the cool blue base remains precise and clean; shading largely absent; a reliable choice for fine annotation and compact writing
• Eyedropper pens — high ink volume ensures full colour saturation and consistent shading and sheen expression; particularly effective for showcasing the ink's full tonal range on premium papers
• Dip pens — excellent for fully showcasing Rikka's shading and soft sheen; broad dip nibs allow large coverage areas that reveal the full tonal gradient and pink sheen; effective for winter-themed illustration, decorative writing, and ink swatch art

Pen Maintenance

Pilot Iroshizuku Rikka (六花) is a pH-neutral, dye-based ink safe for all pen materials including resin, celluloid, and ebonite. As a no-shimmer formulation, it carries no particle clogging risk and is low-maintenance across all pen types. Flush every 4–6 weeks under normal use.

Recommended Uses

• Everyday writing and personal correspondence — the icy cool blue is fresh, luminous, and fully legible; distinctive without being loud; a naturally elegant choice for journals, letters, notebooks, and personal writing of all kinds
• Journaling and poetry — the winter inspiration, crystalline colour, and quiet elegance of Rikka make it a natural choice for personal journals and poetic writing; a colour with seasonal character and emotional clarity
• Note-taking and study — the moderate flow, practical dry time, and clean legibility make Rikka a reliable note-taking ink; the cool blue reads clearly under all lighting conditions; a characterful alternative to standard blue inks for writers who want more than a generic note-taking colour
• Calligraphy and expressive lettering — the medium shading and soft pink sheen are a pleasing combination for decorative calligraphy and lettering; stub and italic nibs bring out the full tonal and sheen range; the icy cool blue reads with elegant restraint in large-format work
• Art and illustration — compatible with dip pen and brush application; the icy cool base, medium shading, and soft pink sheen add crystalline depth and winter atmosphere to illustration, botanical art, and mixed media; particularly effective for winter-themed and snow-inspired artwork
• Seasonal and winter writing — Rikka's snow crystal inspiration makes it a natural seasonal ink for winter journaling, holiday correspondence, and any writing context where the specific quality of winter light and snow is directly relevant
• Ink collection and Iroshizuku series building — Rikka is among the newest Iroshizuku colours (2024) and a distinctive addition to any collection of Japanese inks; pairs naturally with Shin-kai (smoky blue-black) and Tsuki-yo (deep teal blue-black) for a complete Iroshizuku cool-blue palette; the three blues offer meaningfully different characters — Rikka light and icy, Tsuki-yo deep and teal, Shin-kai dark and smoky
• Fountain pen photography and swatching — the icy cool blue photographs cleanly and luminously under natural light; the shading gradient is most apparent on Tomoe River with medium to broad nibs; the soft pink sheen is most visible in raking light at stroke edges; a highly photogenic ink with a clean, crystalline aesthetic

About the Iroshizuku Collection

The Iroshizuku (色彩雫 — literally drops of colour) collection is Pilot's premium fountain pen ink series — a range of inks each named for a plant, flower, or natural phenomenon drawn from the Japanese landscape, and each formulated by Pilot's in-house ink chemists to translate that natural reference into a precise, vivid, and beautifully behaved fountain pen ink. The series was first launched in 2008 and has remained, in the years since, the benchmark against which Japanese premium inks are measured: consistent, safe for all pens, beautifully bottled in the flat-sided glass flask with its built-in ink well, and formulated to a quality standard that has established Pilot as one of the world's great fountain pen ink makers. Rikka joins the series as part of the 2024 expansion — bringing a winter palette to a collection already celebrated for its precise, nature-inspired colour language.

About Pilot

Pilot Corporation is one of Japan's oldest and most respected writing instrument manufacturers, founded in 1918 and producing fountain pens, inks, and writing instruments for over a century. Pilot's commitment to precision manufacturing and ink formulation is reflected throughout the Iroshizuku line — inks that are among the most consistently well-reviewed, most widely used, and most beloved in the global fountain pen community.

Product Specifications

Available at Shosai — Ottawa–Gatineau

Shosai (shosai.ca) is a fine stationery boutique serving the Ottawa–Gatineau National Capital Region. We carry a curated selection of premium fountain pen inks, papers, and writing instruments from the world's most respected stationery brands.

• 📍 In-store pickup: Gatineau, QC — J9J 0K6
• 🛵 Local delivery: Available in the Ottawa–Gatineau area
• 🚚 Canada-wide shipping available
• 🇫🇷 Service bilingue — français et anglais

Whether you are new to fountain pens or a seasoned collector, Shosai is your local destination for inks that go beyond the ordinary.