RGB Colors

V-Ray V-Ray Common Off-topic
1

This has always been a struggle for my, when it should be a science. How can I type in an RGB and get a match?

If I use my color picker, and type the RGB into MAX, the colors are not even close.

2011-07-19_1622.png
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2

gamma 1.0 vs 2.2?

3

nope, one is just darker then the other, but still way off.

4

What type of monitor are you using? …If you are using a wide gamut monitor you are going to have a lot of difficulty matching colors because Max doesn’t work with ICC Color spaces. It is a real pain in my arse.

If this is your case, then the best bet might be to create a color swatch in Photoshop using a the Adobe1998 color profile. It won’t be perfect, but it maybe closer.

5

Yes. I have been making a swatch in Photoshop of colors, for years, but it seems like a poor workaround. What kind of monitor would be optimal? I have a Dell 2405

6

I know I’m just working with screengrabs but in my test it matches pretty darn close (within a rgb value or two when I sample in photoshop). You really should have “gamma correction” set to “specify” or “3dsmax” in the vraycolor material if your max gamma is set to 2.2.

Colormatch.jpg
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7

From what I can tell it looks like the monitor you are using cover sRGB space, but doesn’t go into the wider gamut of Adobe1998. This means the colors should be easier to control.

I would try what dlparisi suggests, and add a Vray Color shader to the diffuse channel of your material, and then add a gamma correction to that and see what happens.