If you really care about matching existing paint, you want specialized equipment. Professional colorimeters call handle this task with ease, but I don't think s

If you really care about matching existing paint, you want specialized equipment. Professional colorimeters call handle this task with ease, but I don't think smartphone cameras are quite up to the task. If I wanted to do this, I'd try something like the Color Muse [1]. It's a $60 Bluetooth peripheral that proports​ to do accurate color scanning. Then an app on your phone tells you the specific paint that corosponds to the scanned color. I haven't used it personally and can't vouch for it's performance, but I wouldn't trust phone camera alone and wouldn't spend $1k+ on a pro model, so I figure it's worth a shot [1] https://www.amazon.com/dp/B01KKEMIF0/ https://www.amazon.com/dp/B01KKEMIF0/