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578 - Sky Blue (Cyan)
Ecoline is one of the 713 brands in Inktend's built-in ink catalog.
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 Ecoline
Ecoline is a line of liquid watercolors made by Royal Talens, the Dutch art materials company founded in 1899 in Apeldoorn, the Netherlands. On the market since 1930, the dye- and gum arabic-based colors are prized for their brightness and are used for illustration, calligraphy, and dip pens, offered in 60 colors as bottled liquid, brush pens, and markers.
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.