Pilot |IROSHIZUKU | Bottled ink for fountain pen | Deep Cerulean Blue

Pilot |IROSHIZUKU | Bottled ink for fountain pen | Deep Cerulean Blue

The Pilot IROSHIZUKU Bottled Ink – Deep Cerulean Blue is a striking and sophisticated ink that embodies the rich, layered beauty of deep blue waters under a bright sky. Part of the esteemed IROSHIZUKU ink series, this color captures the calm strength and depth of nature through its vivid, oceanic hue—perfect for writers who seek clarity, elegance, and visual impact in their writing.

This deep cerulean blue ink provides a bold yet balanced tone on the page, making it ideal for both everyday writing and formal correspondence. Its well-rounded saturation ensures excellent legibility, while still offering subtle shading that adds personality and dimension to each letter. Whether you’re writing with a fine or broad nib, this ink flows effortlessly, maintaining consistent lines and smooth coverage.

Formulated with precision, the water-based dye ink delivers a clean, fluid performance with minimal feathering and bleed-through on quality paper. It is compatible with all standard fountain pens and works exceptionally well in pens with converters or piston-fill systems.

The ink is presented in a 50 mL glass bottle, thoughtfully designed for both aesthetics and practicality. The wide, stable base ensures ease of use, while the inner reservoir helps draw up the last drops of ink without waste. The elegant shape and clarity of the bottle reflect the premium nature of the ink it holds.

IROSHIZUKU Deep Cerulean Blue is perfect for professionals, artists, students, and journalers who value color expression and reliable writing performance. Its bold tone conveys intelligence, focus, and creative depth—making it a standout addition to any fountain pen ink collection.

Key Features:

• Color: Deep Cerulean Blue – rich, oceanic blue with clarity and presence

• Ink Type: Water-based dye ink

• Bottle Volume: 50 mL

• Flow: Smooth and reliable across all nib sizes

• Shading: Subtle to moderate, depending on nib and paper

• Feathering: Minimal on fountain pen-friendly paper

• Bleeding: Controlled; performs well on high-quality writing paper

• Dry Time: Moderate (may vary by nib and paper type)

• Bottle Design:

  • Elegant glass bottle with wide, stable base

  • Internal reservoir for easy filling

  • Airtight screw cap for secure storage