The radially symmetrical or actinomorphic flower of Moraea regalis is iris-like.
The outer three deep blue tepals are larger than the inner three, hairy on the channelled inside in the angled-up claw or lower part, until abrupt flexing down of the lobes, the largest floral parts. These three obovate tepal lobes are angled down and slightly wavy.
The inner three tepals are very narrow, angling out and up or sometimes curving down. They end in acutely pointed, long sharp tips. There are sometimes small and inconspicuous lateral lobes protruding from the middle parts of the inner tepals (Vlok and Schutte-Vlok, 2015; iNaturalist; https://www.pacificbulbsociety.org).