It is literally impossible to run out of phthalos due to their extreme tinting strength and I avoid them for this exact reason. They are great mixers but difficult to handle on sketching conditions. They can mess up everything. But they are great for premixing certain hues.
The Quinacridones though are not in the same league and both Q. Red and Q. Magenta are some of the colours that I use the most and I have to buy often. But I paint a lot of florals and botanicals either way so it has to do a lot with the subjects that I prefer to paint.
Q. Magenta is also the ultimate mixing colour. It shouldn't be left out from any kind of sketching palette as it is one of the very basic colours. I would advice to prefer though those that are made by PV19 that is more transparent and ligthfast.
It is literally impossible to run out of phthalos due to their extreme tinting strength and I avoid them for this exact reason. They are great mixers but difficult to handle on sketching conditions. They can mess up everything. But they are great for premixing certain hues.
The Quinacridones though are not in the same league and both Q. Red and Q. Magenta are some of the colours that I use the most and I have to buy often. But I paint a lot of florals and botanicals either way so it has to do a lot with the subjects that I prefer to paint.
Q. Magenta is also the ultimate mixing colour. It shouldn't be left out from any kind of sketching palette as it is one of the very basic colours. I would advice to prefer though those that are made by PV19 that is more transparent and ligthfast.