T-55 colours?

This link:
http://www.ipmsstockholm.org/colorcharts/stuff_eng_colorcharts_fs.htm
shows Tamiya XF-51 as being FS-34088. If you go to that page and click the FS number link it will show a sample of the color. You can pick something that is close enough. The only other match they list is a mix of Humbrol 155 and 159.

Edit ... This page:
http://www.ipmsstockholm.org/colorcharts/stuff_eng_colorcharts_tamiya.htm
shows Humbrol 108 as a replacement for XF-51 but it's the only replacement listed.

thanks

Looks like russian armor green to my eyes...
Doesnt look blueish at all. It's just that russian armor green has a nice tint a bit like european green.
You should try modelmaster russian armor green. It is the name of the colour.

thanks, man, green in that picture was the last colour that came to mind.

You're welcome!