why do colours never match in capture from image created in fresco?

for example i export a hi res illustration image from Fresco into my ipad pro camera roll, go to capture, select each of the 5 colours and the level number is always not correct, this used to happen in adobe illustrator draw too? 🙂 i know Fresco has "recent colours", but i would like the colours to match to use across adobe desktop via creative cloud etc. i had to manuallly change the colour levels to match the colours in the exported illustration