The Diamine Orange (30 ml) is a clean, straightforward orange that leans bright and lively without shifting too much toward red or yellow. On paper, it appears as a true orange with a slightly warm tone, giving it a vibrant look while still remaining readable for notes or highlighting. Depending on the nib, you may see some light shading, but overall it stays fairly consistent in color.
The ink is water-based, dye-based, and safe for all fountain pens, including vintage models. It has a smooth, balanced flow that works well across different nib sizes, without feeling too wet or too dry. Like most Diamine inks, it’s non-toxic and easy to clean, making it a low-maintenance option for everyday use.
The 30 ml bottle comes in a slim plastic design, which is lightweight and easy to store or carry. It’s especially useful if you like trying different colors or rotating inks frequently, though the narrower opening can be slightly less convenient for filling larger pens compared to wider bottles.