ColorCrest
All around shop helper.
OP says nothing is close from the Roland chart. Clearly there is a workflow and lack of understanding issue. So, we're looking for a quick fix in the meantime.Why not print a pantone chart and just pick a yellow off of it?
Entirely acceptable especially in this case. More learning can be left for another day.Print it the same way you plan to print the decals, same profile, passes, same material etc. I'll get chastised here but if all you print is your own files, you really don't need to worry about profiling to match proper colors. It's the same and easier to just pick colors to match the output you need.
If you change profiles and media and colors are critical then the you should have a chart printed for each profile and media that you use.
Printable charts are floating around here on s101