Sailor Ink Studio #640 is a smooth-flowing, medium blue-black ink known for its deep ocean blue shade with low shading and no sheen or shimmer. It's a darker version of #540, offering consistent performance safe for all fountain pens and ideal for those seeking a reliable everyday blue. This ink suits writers who prefer subtle elegance and smooth writing without excessive properties.
Properties
Best Uses
Similar Inks
Reviews & Resources
Sailor Ink Studio Set 11 - Mountain of Ink
Review of Sailor Ink Studio set #11 including #640, with swabs, writing samples on various papers, properties like shading, sheen, water resistance, feathering, and comparisons to other inks. Notes medium sheen and shading for #640, similar to J Herbin Vert de Gris.
Ink Review #146: Sailor Studio 640 - Fountain Pen Pharmacist
Detailed review of Sailor Studio 640 describing it as a beautiful dark teal ink suitable for office use, with overall positive assessment of its color and performance.
Ink Review: Sailor Ink Studio 140 - The Gentleman Stationer
While focused on #140, discusses Sailor Ink Studio series properties including shading and reliability, noting uniform success with Sailor inks and intrigue for double-shading colors similar to #640's characteristics.
Ink details on this page were generated with the assistance of AI and may not be fully accurate.