I haven't got a scanner, so I took a picture with my digital camera. I tried to coulour-correct it, but as I was using a laptop the colours may be slightly misrepresented. Please take it for what it is!

From left to right: Pilot Blue, Pilot Iroshizuku Tsuyu-Kusa, Pilot Iroshizuku Ajisai, Pelikan Royal Blue.

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Thanks for posting this picture. I like the look of the second one down.

I like that ink myself! It (the "Ajisai") is similar to Pelikan Royal Blue, but it is a bit more saturated and slightly more purple in colour. I personally prefer it to the Pelikan ink, which is less vibrant and looks washed-out in comparison.

Oops, that would be the Tsuyu-Kusa, right? The Tsuyu-Kusa is a nice ink too. Unfortunately I haven't got any similar shades of blue to compare it to, but it is a nice, "pure" blue without any hints of black, green or purple. The colour is beautiful but not ostentatious in any way.