What's the significance of Royal Blue colour on Day 4 of Navratri. Navratri 2026 Day 4 falls on October 14, with royal blue taking centre stage as the colour of the day. Associated with elegance, tranquillity and abundance, the shade offers a striking choice for festive dressing. From traditional sarees and embroidered lehengas to contemporary Anarkalis, royal blue outfits bring a vibrant touch to Navratri celebrations, Garba nights and Dandiya gatherings.