Default AutoCAD 2017 plot color lineweights

[Greymoire]

What are the "Default" values of AutoCAD plot color lineweights?

[ccowgill]

https://knowledge.autodesk.com/suppo...D5130-htm.html
0.25mm according to the above article.

[Greymoire]

Allow me to clarify, I know that the default AutoCAD color plot file, the line weights assigned for the following colors:

1=0.18mm, 0.0071"
2=.025mm, 0.0098"
3=0.35mm, 0.0138"
4=.035mm, 0.0138"
5=0.50mm, 0.0197"
6=1.00mm, 0.0394"
7=1.40mm, 0.0551"
8=0.35mm, 0.0138
9=0.20mm, 0.0079"
10=0.18mm, 0.0071"

I would like to know what the default assigned values are for the rest of the colors up to 255.

[ccowgill]

Actually, on mine, there are no default values at all, other than use Object Lineweight, for all 255 colors.
you can find the default acad.ctb file here:
C:\Users\*username*\AppData\Roaming\Autodesk\AutoCAD 2017\R21.0\enu\Plotters\Plot Styles

[Greymoire]

I reprinted using a large format plotter instead of a printer and now I see, it is not a lineweight difference, but a grayscale difference creating an optical illusion.

On that note, I will change my question.

Is it possible to determine the grey color or light-dark value if any associated with each color?

[ccowgill]

unfortunately, no. the grey scale is directly associated to the actual color of the object, so yellow is really light, red is darker, blue is super dark, white would be black, etc.
Now on that note, you can actually change the ctb file to make everything black/grey. but you would have to set up everything to start with manually.
What is it you are trying to achieve? Perhaps that will help get to your ultimate solution more quickly.