Hive Mind Advice: Help with Nos Sheaffer Skript Blue (Glass Bottle)

[sfarkhan]

I have some NOS Sheaffer Script Blue ink in the old glass bottle. It hadn't been opened till I got it and I made a sample for my ink catalog and was wowed by the color (please see the attached image).

I don't have any blue inks like it nor have I seen any blue/grey inks that match it. It's blue, not aqua, and medium toned, like a grey. Many blues go aqua, or deep blue, blue black or burple.

It's the almost the same color as the light lighter blue banner this forum on my screen.

The image I attached is as close as I can get to what I see. It's on Clairefontaine paper.
Can anyone recommend a modern alternative that's close in color?