A Bellagio $20 poker chip and an Excalibur $2.50 chip were the hardest chips to get the orange color right.
I tried with my old scanner, a Sony digital camera and my Epson scanner with standard settings.
The orange color wasn't even close.
After numerous attempts on my Epson scanner I finally got the colors to where it was almost like in real life.
It's pictured as "Epson custom settings"

The only problem was I went through so many scanner steps I forgot how I got there.

If you have these chips try it yourself. See if the orange color comes out like in real life.
If it comes out correctly let me know how you did it.