Sequins on navy create sparkle without the brightness of sequins on a lighter ground. The dark colour base means the sequins read as sophisticated rather than playful. The light reflection off navy sequins is subtle and controlled which is what you want for evening wear that is statement-making without being costume-like. Sequin dresses need to be cut well because the embellishment draws attention to the silhouette. Navy as a base colour means you can wear these to more conservative occasions than you could manage in a lighter sequin dress. The formality of the occasion determines how much you dress the piece up or down with accessories. These are the pieces where the sequin detail earns its place because it elevates the whole dress rather than distracting from it.