Trying to find the correct color, or finding the corresponding color of a different brand, is not an easy task.

A helpful tool for Android (smartphone, tablet or chromebook) can be found here:
https://play.google.com/store/apps/details?id=com.pulgadas.hobbycolorconverter&hl=nl&gl=US
Not sure if this is also available for Apple.

A converter between various paint brands can be found here:
https://www.modelshade.com/paint-conversion-chart/

Very useful indeed, my friend @johnb!