SakuraPass - This plugin can save you from hackers if you have admin rights on your account. The plugin is quite lightweight, but very convenient and good to use.

Available:
HEX support.
Custom messages when requesting admin password.
Custom admin password.

Important!
For those who have installed plugin versions below 1.16, change the message in config.yml to normal text, because HEX colors are not available on 1.12.
This is my first plugin and first time in this field, hope you like my plugin and don't judge it harshly, have a nice day everyone! nya!