I'm a kind of color blind where I only see 150,000 colors. I have trouble distinguishing where purple ends and blue starts. Same goes for a bunch of other color

I'm a kind of color blind where I only see 150,000 colors. I have trouble distinguishing where purple ends and blue starts. Same goes for a bunch of other color pairs. I didn't figure it out for decades, and before I did I remember some heated arguments where it was me vs everyone else on "this shelf is purple" vs "that shelf is blue, not purple". The day I figured it out those memories started coming back and it all clicked. I stopped trusting myself after that. I knew I didn't trust myself anymore when my 3 year old son would reference the bus I used to catch by it's color and I didn't know whether he was wrong or I was, so I just kept my mouth shut cos there was a better chance he was right.