Part paint matching

Playing around with painting some engine parts, but when I paint an Ignition Distributor and the Distributor Cap the exact same color (verified all paint settings are identical), when I put them actually onto the engine, the two colors are significantly different. Has anybody else encountered this, and/or have any suggestions? (Other than minor tweak the color of one, run over to mount it on the engine and check, wash rinse repeat.)

https://preview.redd.it/txp496tfy8mf1.png?width=2560&format=png&auto=webp&s=1490f4e449c11f6135ee86860dea01b9c1546bbd

It's not just an angle thing, the cap is that much lighter from all angles both when moving around the engine block, as well as just rotating the engine block. Any suggestions would be greatly appreciated.