Now that I’m FINALLY back with all my review materials I can pick up where I left off on the Iroshizuku reviews and comparisons.
Today I’m looking at Iroshizuku Kon Peki (KP), Diamine Mediterranean Blue (MB), and Diamine Asa Blue (AB). Let me just start by saying that Kon Peki is a truer blue than either MB or AB. If you take a look at this swabbed comparison you can see that all three are roughly the same hue. They are swab from lightest (MB) to darkest (AB).
Mediterranean Blue is
Lighter than KP
Very slightly greener than KP
Feathers a bit more than KP
Asa Blue is
Darker than KP
Also slightly greener than KP
Flows better/faster than KP
While MB and AB are both quite similar to KP I think Mediterranean Blue is the better alternative in terms of color. However, take a close look at the review card and sheet for MB. It has some behavioral issues that might be a no go for some. If behavior is more important to you than the color match I’d choose Asa Blue as the alternative.
(please click to enlarge and sharpen the photos)



Other possible alternatives to Kon-Peki:
Noodler’s Eel Blue
Diamine WES Kensington Blue
Do you know of any other alternatives? If so, please leave a message listing them. We’d all appreciate it!
Disclaimer: The goal of these reviews is to find inks that are similar in color and behavior to the Iroshizuku line but at a lower price point. This should not be construed as an attempt to find exact replicas. That is not possible. The Iroshizuku inks succeed at being unique. The only way you can get an exact match is to save up for the Iroshizuku. Whether or not these suggestions work for you is entirely up to you.
The two bottles of Diamine were sent to me for review by the good folks at Diamine. I am not otherwise affiliated with them.








Great comparison!! Thanks.
Nice job, Dizzy. I know you’re trudging through these comparison reviews as they are the toughest to do. Everyone appreciates your work! For my eyes, these are some great Iro alternatives, thanks!
Thanks Brian!