Was Jesus Robe Scarlet or Purple?

The red clothing is easy to wear and soldiers wear them. It is similar to purple which is the cloak of the pre-Roman like leaders of the Greeks in the East.

"They stripped him and put a scarlet robe on him"(Matthew 27:28)

"And they clothed him in a purple cloak; and after twisting some thorns into a crown, they put it on him."(Mark 15:17)

This is what was said in a Bible Commentary by Bible scholar, Craig S. Keener: 

“Nakedness was especially embarrassing to a Jewish person in antiquity. Red robes would be those most readily available, because soldiers wore them; this garment could resemble the purple robe of the pre-Roman Greek rulers of the East. Roman soldiers often played games to pass time: they carved on the stone pavement of the fortress Antonia, where they were garrisoned on the Temple Mount, and knucklebones used as dice have also been recovered there.” (The IVP Bible Background Commentary: New Testament, Craig S. Keener, page 127)

Wikipedia gives information to analysts and according to information from them, Tyrian purple is also known as “Tyrian red.” 

“Tyrian purple (Ancient Greek: πορφύρα, porphúra; Latin: purpura), also known as Tyrian red, Phoenician purple, royal purple, imperial purple or imperial dye, is a reddish-purple natural dye.” (https://en.wikipedia.org/wiki/Tyrian_purple)