A Moraea regalis flower is dominated by the three large lobes at the ends of the outer tepals. They are dark blue to royal blue or blue-purple, depending on the colour naming convictions of the observer. Nearly parallel vein lines are numerous and dark across their surfaces. The tiny, white nectar guides of these flowers are hard to see.

The green, inferior ovary protrudes, tubular above the spathes but below the tepals. The column formed by the filaments continues over the flower centre joined by the style before it branches.

The three flat, narrow style branches, paler than the tepals but resembling them, spread from the top of the central column, their tips forked and concealing the anthers (Vlok and Schutte-Vlok, 2015; iNaturalist; https://www.pacificbulbsociety.org).