There are a few resources online where you can find paint codes in a digital format of some kind, such as here. You can take those values and convert them to GTS HSV pretty easily but finding the codes is a challenge.
How do you do the conversion to GTS HSV ? I have found an HSV code for my color, but the numbers does not match what I see in the boxes in GTS.
E.g. my color is 224°, 0.78, 0.75 - but that can not be set in GTS paint picker.
You need to convert the H value is all. GTS uses a 0-100 scale instead of the 0-360 of actual HSV. The S and V values are 0-100 in both so can be used directly.
To do the conversion just divide your H by 3.6. You'll have to round up or down when putting it into the the color picker so keep in mind you can try both values if it looks slightly off.
In your case, 224 / 3.6 = 62.2 so I would use 62 78 75 and see if that looks right to you. Keep in mind the solid, metallic and pearl finishes all will look slightly lighter or darker.
Perfect, what I'm working on is the Cerulean Blue that is used by McLaren in the F1 livery. The orange that they have as standard in the picker is pretty close. McLaren does not publish their orange color codes for obvious reasons :-)