The flag of the Pitcairn Islands has an aspect ratio of 1:2. It consists of a blue field (color code #00247D) with the Union Jack in the canton and the coat of arms on the fly side.

The Union Jack is composed of red (#C8102E), white (#FFFFFF), and blue (#012169) colors. The coat of arms features a shield with a green field (color code #007A3D) and a yellow-bordered blue stripe (color codes #FCD116 and #00247D). On the shield, there's a sailing ship (Bounty) in black (#000000) and a Bible in white (#FFFFFF) with a yellow (#FCD116) bookmark.

Exact measurements and geometric properties for the flag elements are not readily available.