The Lord’s body is blackish, but is eternal, full of bliss and knowledge, and very, very beautiful. His eyes are always peaceful, and they are reddish like the rising morning sun. I could immediately recognize Him as the Supreme Personality of Godhead by His four hands, different symbolic representations, and yellow silk garments.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
श्यामावदातं विरजं प्रशान्तारुणलोचनम् । दोर्भिश्चतुर्भिर्विदितं पीतकौशाम्बरेण च
śyāmāvadātaṃ virajaṃ praśāntāruṇalocanam | dorbhiścaturbhirviditaṃ pītakauśāmbareṇa ca
SB 3.4.7