Arhopala inornata is a butterfly in the family Lycaenidae.

The forewings have a linear brown costa and outer margin.

The hindwings have a broadish brown costa and linear outer margin.

On the underside both wings are greyish brown, with slightly darker markings palely encircled.

In females the upperside of both wings is pale violet, with a broad brown costa and outer margins increasing towards the apex, which is largely brown in the forewings.