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Polygon Symbology using RGB Attribute Field - Arc Pro

Question asked by angelo.mangiardi on Apr 26, 2019
Latest reply on Aug 13, 2020 by mywarpedmind

Was wondering if anyone could walk me through this workflow problem I'm having.  I'm relatively new to the Arc Pro world. 


I have a series of polygon files (50+ layers representing various geologic rock units); the recommended discrete color assignments are embedded in the attribute table of each layer in a single text field that contains the suggested rgb code for the various rock type.  Each layer can have over 100 unique units with up to 30 different color assignments - so manually inputting these color definitions would be extremely time consuming.


Reviewing the help notes, sounds like I should be able to do this by working through the Vary symbology by color—ArcGIS Pro | ArcGIS Desktop though, I'm finding the instructions a bit confusing.


It states that the field must contain numeric data.  Can I assign the colors if the R G B values were split into 3 separate fields in numeric form, and then using some kind of Arcade Expression?  I don't think converting the R,G,B values to HEX would solve my issue as that is another alphanumeric text system. 


Is assigning color symbology based on an RGB field even possible?  I remember it wasn't in Arc Map, but was under the impression that it was doable in Arc Pro. 


Any guidance would be most appreciated.