Why is my Barcelona Red not Barcelona Red?

I understand paint fades with years in the sun and I understand if someone mixes a batch of paint for me I'm relying on them to get it right (I used to mix automotive paint when I worked for a NAPA store many many years ago, and I've sold paint supplies to many body shops back in the day). My truck is an 09 and I've owned it since 2010 and it's never been painted. Ive bought touchup paint many times over the years including back in 2010. And and I've bought from many sources, but they are ALWAYS too dark compared to what's on the truck. Has anyone else noticed this about their 3R3 Barcelona Red (or any other color)?

 

I’ve never seen touch up paint in the little bottles ever be an exact match but it also because you’re not blending the paint when you do touch up on a chip spot which is why it’s always noticeable.