Franklin-Christoph Blue 72 is a classic, well-saturated blue ink that matches Pantone 72, offering excellent flow and reliable performance. It is a light to medium blue with subtle shading and is specifically recommended for signing documents where blue ink is required, making it ideal for professional and everyday writing.
Franklin-Christoph Blue 72 Ink Review @1901FC - Gourmet Pens
Well-behaved ink that is a really nice bright blue without being washed out, featuring simple low-waste presentation.
Franklin-Christoph Blue 72 - Ink Review - The Writer's Armory
Blue 72 is a light to medium blue with a hint of shading and a distinct cut between light and dark tones, despite limited tonal variation.
Blue 72 - Franklin-Christoph - Ink Reviews
Blue 72 matches a Pantone number but is described as just another boring blue among many similar inks.
Franklin Christoph Swatch Tests - Fountain Pen Ink Art
Swatch tests of Franklin-Christoph inks including Blue 72, noting they are quality writing inks that are rich, dense, and show sheening and chromatography.