Afghan Northern Alliance colours

Is it a blue or a gray? Try image searching for photos of the actual tanks before relying on a profile as your sole reference. I suspect that it may be a gray or blue gray.

Some of the GIS results show both....

Here is the blue

http://l7.alamy.com/zooms/952f4f317431444ca2daa060891d0ae7/northern-alliance-fighters-atop-a-russian-made-t-62-tank-arrive-in-h0076a.jpg

The other tanks are a standard mix of greens and browns. I thought the blue was pretty cool, and wanted to model one.

Checked some paint charts and my own Tamiya colors nothing was an exact match. The closest I found was Prussian blue from Vallejo paint color 70.965. I suspect you could also mix blue and grey to mimic the reference photo color.

Yes, after making my suggestion here, I went and did an image search myself. There were several examples of similar schemes, but the color in question varied from a neutral gray to the medium blue in the photo you linked. And several shades in between.  I'd bet that the Northern Alliance used whatever paints they could get their hands on. Based off of the photos you have a lot of leeway in your color choice. So go down to whichever shop you buy your paints from and pick what looks best to your eye. Close enough will work in this case. 

I agree with stikpusher. It's a home made camo pattern that varied from tank to tank. Freshly painted tanks were more vibrant and older camo jobs faded. The blue could be water based house paint for all we know. 

Sounds good, thank you :)