Devotee: Kṛṣṇa is black? Sometimes He's depicted as blue.
Prabhupāda: Yes. Kṛṣṇa is bluish. Kṛṣṇa's color is the sky. When you see the clear sky, bluish sky, are you not very happy? "Oh, today is very nice day, blue sky." Especially in this country, when the sky is always overcast with cloud. So why you appreciate the color of the sky so much? That is Kṛṣṇa's color. Kṛṣṇa's body, there is a ray, brahmajyoti. That brahmajyoti is reflected in the sky. That brahmajyoti is outside this material sky, but that is being reflected. Therefore the sky's color, it appears bluish. Yasya prabhā prabhavato jagad-aṇḍa-koṭi koṭiṣv aśeṣa-vasudādhi vibhūti-bhinnam [Bs. 5.40]. It is stated in the Brahma-saṁhitā, "On account of distribution of the rays of His body, the brahmajyoti, there are generation of innumerable universes."
So all these universes—this is one of the universes—they are in that brahmajyoti, and that brahmajyoti is being reflected in the sky, and sky is so beautiful. So how much beautiful is Kṛṣṇa, just we can imagine. Just like the sunshine. The sunshine is the rays of the sun planet, and in the sun planet there is sun-god. So if sunshine is so pleasing, just imagine how the sun-god is pleasing. Similarly, Kṛṣṇa's jyoti, brahmajyoti, is so important. Then just imagine how Kṛṣṇa's beauty is appreciated in transcendental world. Yaṁ śyāma-sundaram acintya-guṇa-svarūpaṁ. Barhāvataṁsam asitāmbudha-sundarāṅgam. Barhāvatāmsam asitāmbudha. His color is compared with the blackish cloud, asitāmbudha, sundarāṅgam, but very, very beautiful.
Śrīmad-Bhāgavatam 7.9.9 Montreal, July 4, 1968