Designed and developed by @chrillings
If you want to pick the exact color, Drop allows you to change your color profile to insure color accuracy.
Sometimes you need to zoom into a smaller area to grab the pixel color you need.
Access whenever you need it. Drop provides amenu bar icon, dock icon, or both.
Pick a color and the code of your choice is copied to your clipboard automatically.
On macOS Catalina and above, open System Preferences > Security & Privacy > Screen Recording and make sure Drop is selected.
Absolutely not. It uses an API that (now) needs user permission in order for the app to see the screen. While a slight nuisance, these privacy features built into macOS are great!
Open the the preferences within Drop and make sure the color profile you select from most frequently is selected.
Open the the preferences within Drop, go to App Icon, and select "Menu Bar Only". This allows Drop to run as an agent from the menu bar and pick colors within full-screen apps.