What do you mix with light blue to get dark grey?

i know you use black and white, but I know you don't h

ave a black in your art kit anywhere, so I ain't really any use!!

soz m8!!

Yes, black and white will give you grey. but you can make it more lively. Onece you have mixed black and grey, add blue, or red, or pink even, you will find warmer or darker shades of grey once you have mixed black ad white