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Colour maps files for imagery

Question asked by GSCUser85 Champion on Aug 31, 2016
Latest reply on Sep 6, 2016 by GSCUser85

Do colour map files (*.clr) actually really give you the true rgb values of the colour you see in ArcMap?

I was helping someone with some questions about classified imagery. The data was a Land cover dataset which the veteran Curtis Price had a hand in many moons ago.

This is a classified image with a lyr file. So I exported the colour map to a clr.

the clr file looks like this (its just text so open it in any text editor):

 

And in ArcMap the colours look like this :

 

But when I clip a small portion out of this image, and re-apply the colour map I have just exported, the colours look like this :

 

So, what are the "r,g,b" values in that colour file.

If I use a colour picker on the web, vals 240, 240, 241 (Code 11 - Open water) is indeed a whitish shade, not blue as in the original.

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