Gray - is it gray?

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Thanks Illah

I think if I can find a neutral grey paint with a slight shift in *a and *b values towards -ve, I would be happier when used for portraits. Would you agree Illah?

Henry
 
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Henry, IMHO it depends on what lights you use. Do you mean both a* and b* shifted to "-"? That is, to bluish cyan?

You can also mix Black Bone with Titanium
White and some third paint to get the tint you wish.
 
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30 parts of Neutral Gray N5 #1445 Series 1 + 1 part Cerulean Blue, Chromium #5050 Series 7 + 1 part Cobalt Turquoise #5144 Series 8; if my calculations are correct.

Basically, Neutral Gray N5 is Pantone Cool Gray, with slightly negative both a* and b* - L*52.02 a*-0.21 b*-0.28

Probably Golden Artist Colors, Inc can give you a more precise answer?
 
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It is about what to use to paint walls in digital darkroom, and in studio, as well as what to use for monitor hoods; how to make custom gray cards for white balance and custom gray step wedges; what industry cards and other materials are suitable for colour control.

One more supplier for colour viewing equipment and neutral gray paint is GTI, ( http://www.gtilite.com/index.html ) B&H carries the whole line of their goods.
 

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