Then you have to account for the "misses" by the model paint companies. I just love Aeromaster paint, it is my go to Acrylic. But, their ADC gray is actually a completely different color than 16473 gray, it is a high numbered green instead. So, I am using those as the base paint for tinting to make the light green used for weapons stripes. One of their soviet grays is a perfect match to 16473, so I use that instead for the ADC paint.
I know that thousands of people don't believe this,,,,,,but, the paint "matching" sites don't open the jars of paint and match them to anything,,,,,,,they just compile lists based on the model paint companies' claims. I found this out when I congratulated one of the best sites on his extra work,,,,,,he emailed me back to say that he uses paint brochures just like all the rest.