The answer is: Blue

Exo 28:31 - the middle garment, beneath the ephod and above the coat, made from one piece of fabric and similar in design to the robe Christ was wearing at the crucifixon (John 19:23)

Let's dive a little deeper into the fascinating details surrounding the priest's robe, particularly its striking blue color! According to Exodus 28:31, this robe, worn by the high priest, played a significant role in rituals and in conveying a divine aspect of the service of the Israelites. Blue—often associated with heaven or the divine—serves as a powerful symbol in many scriptures, highlighting the connection between the earthly and the spiritual.

Did you know that in ancient Israel, the dye for this vibrant blue fabric, known as “tekhelet,” was made from a particular sea snail? This rare color was highly valued and not easily obtainable, which made wearing it a true honor. Precious and weighted with meaning, this royal blue not only adorned priests but connected their function directly to the divine.

Now, let's take an interesting leap to the New Testament. When discussing Christ's robe during the crucifixion in John 19:23, the echoes back to this blue robe of the Old Testament remind us of the continuity in biblical themes. Priestly colors show how God’s presence was not merely confined to the Temple but transcended time and culture. Both the Old and New Testament garments establish a visual narrative that shows an overarching plan—a tapestry skilled in sacred symbolism that profoundly resonates with believers of all walks. Whether seen in the refinement of the attire worn by the high priests or Christ, each color and each piece tells a story imbued with purpose and significance.