Another old classic, Passion! This is a beautiful sheer pink, perfect for that crisp clean nail look. Passion is also very nice for layering soft glitters or shimmers in between.
This polish has been in my family for what feels like to be generations. We've all owned it at some point. And while it is a pretty clean, neutral, work-friendly shade - it is a little bit boring for our very colourful nail polish collections!
I'm not too sure if Passion is available in OPI's main line, but also another easy one to find.