I paint murals like these - https://imgur.com/a/F2xPetm - so I am highly dependent on the colour being exactly as the one in the project. The problem is that lately many online colour pickers became stupidly expensive and the free versions are mostly HEX, CMYK or RGB.
There used to be the free version of now not existing NCS Navigator. There are some paid mobile versions like Colourpin that loose most of the functionality without 500 € tool.
I also do have a NCS and RAL colour paper samplers but often this is not enough for me.

Is there any free tool that allows picking RAL or NCS colours with their numbers? Or maybe at least something that translates the palettes between different systems?