arm with as white a hand

[SuprunP]

[...] he waved a long, thin, delicate arm with as white a hand on the end of it, which fluttered like a silk flag [...]
(M. Peake; Gormenghast)

Is the author thus saying that his hand was as white as his arm?

Thanks.

 

[wandle]

Yes. He presumes that the reader will expect an arm to be white, but not necessarily a hand.

 

[SuprunP]

Thank you wandle!