Images of the Savior
In general, on the icons of Christ the halo looks the same as that of the saints, but has additional details. This cross is the main symbol of Christianity. The world was saved by the cross. The Lord came here to die on the cross. Through the suffering of the cross, He returns the fallen universe to Himself. Therefore, it is no coincidence that the cross on His halo has expanding ends. It seems to spread into eternity, covering the whole world.
In addition, three letters are always inscribed in the circle of the halo - “ό ώ ν”. The Greek word όών means "Who is." It is needed to emphasize that He who is depicted here as a man is also the Eternal God, the Cause of all existence. The halos on some (rather rare) icons of the Savior enclose an octagon inside. The two squares symbolize two worlds and differ in color.
Icon Jesus Christ
Red, in iconography, is a symbol of earth and martyrdom. In this case, the one that the Savior shed for our world. Blue is the color of the sky, the spiritual world of angels. An eight-pointed star formed by quadrangles is a symbol of the unity of two worlds. As an image of the power of Christ, His dominion over the visible and invisible, this star is depicted behind His head. But this is only the first semantic layer. The same star symbolizes the properties of God Himself.
The blue color in iconography, like black (“blue is like the thinnest darkness... Just as yellow always brings light with it, we can also say that blue always brings with it something dark” P. Florensky), can be an image of the incomprehensibility of God , Its unknowability and inaccessibility to us.
Red is the color of the king, a symbol of the omnipotence of Christ.
In addition, there are differences in the iconography of God the Father. But, since His images were prohibited by the church, and appeared only due to theological illiteracy, they need not be mentioned.
