PDF file shows purple when colors are blue

Hello all, I'm driving myself nuts wondering if I am losing my eyesight and if this is the end of me. If I can't live in a world where I can't see blue, I'd rather not live at all :P. I've tried it all and have looked through forums online about "color management" and changing the preferences but cannot for the life of me figure out what I am doing wrong??? I did this file on photoshop and have srgb as the default. I have tried CMYK and adjusting the colors to no avail. I have tried ALL options as far as color management goes but nothing seems to work. On my laptop, the document itself is a blue color (royal blue) yet on my iphone the color comes out as purple - very bright purple. I dont understand what Im doing wrong or the lack of what I am doing. Any and ALL help is BEYOND appreciated as I am literally losing my mind w this. I am using the latest photoshop version and acrobat version. Thank you so much for your valuable time and input 🙂