Might not be a RAL. There are a number of different colour pallets. RAL is just one, Pantone being another.
Its complicated to try and match a colour. Easiest thing to do would be to go to wherever you want to get it painted and talk to them. They will have the official swatches for the powders/paints that they use and you’ll be able to pick one that best matches. You would struggle to the point of it being impossible to do this accurately on a computer.
Top tip is to look at in several light sources. Different lights have different wavelengths that make them up. So if you will predominantly be admiring the colour of your bike outdoors then it is best to check the colour outdoors. Look up metamerism – or think about buying something you thought was black only to walk outside and realise it is navy etc.