I don’t think Mercedes stocks or sells wheel touch up paint. (I’m not even sure Mercedes makes its own wheels). I have a Palladium Gray C300 and the wheels are a very close match. Selenite Gray might also do it.

Or ask your dealer who they use for mobile wheel repair and/or scratch repair. They can tint custom colors on site. Since the rim is off the car, I’d drop it off and ask your SA to have it done next time the guy is on the lot.

I believe the Wurths is a match for the silver painted and clear-coated wheels Mercedes and BMW used back in the day. The W205 5 spoke has a machined and clear coated finish, with a painted barrel and spoke detail.

Wurth is silver paint for painted wheels. There is nothing painted silver on your AMG wheels. They have a machined and clear coated lip and face and a painted barrel and spoke detail. Wurths won’t match either.

Drop the wheel off at the dealer and have them let their mobile scratch guy fix it. Mercedes doesn’t sell wheel-colored touch up paint. It’ll have to be custom tinted, which is what mobile scratch repair guys do all day long.