Converting Dark LME to grain

[Gtrfrk182]

ive searched on the forum but mostly all I can find is converting light LME.
I know the ratio should be someting like 1# grain/.75# LME

But what other grains should make up a Dark LME?

can you help me convert 6.6 lbs of Dark LME?
thanks

 

[barleyhole]

what kind of beer style are you brewing, and what is your target OG? Without any additional fermentables 6.6 lbs of DME would give a 5 gallon batch an OG of around 1.048.