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Blue
Koh-i-noor is one of the 713 brands in Inktend's built-in ink catalog.
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Paper & pairing
Blues and navies are the most broadly "safe" fountain pen colors: legible, professional, and unlikely to raise eyebrows in an office. This ink will behave predictably on most fountain-pen-friendly paper. Cheap, highly absorbent paper (standard copier paper) will dull any ink's saturation and can cause feathering or bleed-through with wetter nibs.
About Koh-i-noor
Koh-i-Noor Hardtmuth, founded in 1790 and headquartered in České Budějovice, Czech Republic, is one of the world's oldest stationery and art materials manufacturers. It produces pencils, pens, inks and art supplies exported to over 90 countries; the brand name, adopted in 1889, references the famous Koh-i-Noor diamond.
Storing and using the bottle
Bottled fountain pen ink has an effectively long shelf life when kept capped and out of direct sunlight: most inks remain usable for years. The main risk isn't the ink spoiling, it's a pen sitting inked and unused for weeks: that's what causes clogs, not the ink's age.
Frequently asked questions
Similar shades By colour distance
Color shown is a close digital approximation of a typical swatch, not a calibrated color match.