Nacaduba pavana male has gray-blue upperwings, the female is brown with pale blue disc patches on the forewings and dust blue on the basalts of the hind wings. The underside is grayish in color with post-discal, discal and basal bands consisting of a double array of whitish striae lined with darker stripes. There is an orange-crowned tornal spot with turquoise patches and a filamentous white-tipped tail at the tip of the vein 2.
Larva: larvae of Nacaduba pavana are green or reddish in color, have reddish brown markings on the 7th and 8th abdominal segments, woodlouse shaped.
Pupa: The pupa of Nacaduba pavana is yellowish brown in color with brown to black spots, has a distinctive lycaenid shape.