What is the color of the diplomatic E passport?

The color of the diplomatic E passport is black. Diplomatic passports are issued to individuals working for the government in an official capacity and are recognized internationally for their purpose. The use of specific colors helps to differentiate the various types of passports, with black being designated for diplomatic passports in many countries, signaling the holder's official status and privileges. This distinct color coding is important for border controls and facilitates easier recognition by authorities during international travel, as diplomatic passports often come with certain diplomatic protections and immunities.

Each of the other colors represents different passport types, such as tourist or official business passports, and does not accurately align with the recognized standard for diplomatic passports.