The Diamine Mediterranean Blue (30 ml) is a vibrant, medium-toned blue that sits between a classic royal blue and a lighter sky blue. On paper, it comes across as clean and lively rather than dark or muted, with a slightly summery feel. It can show some gentle shading depending on the nib and paper, though it generally stays consistent and easy to read.
In terms of performance, it’s a water-based, dye-based ink that’s safe for all fountain pens, including vintage ones. The flow is balanced—not too wet or dry—making it reliable for everyday writing. Dry time is usually around 20–30 seconds on standard paper, and while it doesn’t have shimmer, it can show a very slight red sheen under certain conditions on higher-quality paper.
The 30 ml bottle comes in Diamine’s standard slim plastic design, which is lightweight and practical if you like rotating inks or testing colors. It’s a good choice if you want a blue that feels brighter and more expressive than standard office blues, without going too bold or unconventional.
