Four Southern Cross stars form a diamond pattern against a black night-sky. This represents the importance of navigation to this country by sea.
The teal colour represents this water-rich land.
The line that traces the diamond shape (delineating the two background colours) represents a stylised outline of the mountainous backbone of the North and South islands, which appear to lie diagonally in the Pacific Ocean as viewed on the map. This angle is also an echo of the angles found in the union jack.