Red, scarlet, or crimson, is the appropriate color of the Royal Arch Degree, and is said symbolically to represent the ardour and zeal which should actuate all those who are in possession of that sublime portion of Freemasonry. Red is also a predominant color in some higher degrees; when the symbolism refers to to moral virtue it signifies fervency; when it relates to historical items it is emblematic of the shedding of blood. A symbolic color in the distinct clothing of the high priest… — ( Exodus 28:6,8,9 )
Biblical Reference
Exodus 28:6,8,9
6 And they shall make the ephod of gold, of blue, and of purple, of scarlet, and fine twined linen, with cunning work.
8 And the curious girdle of the ephod, which is upon it, shall be of the same, according to the work thereof; even of gold, of blue, and purple, and scarlet, and fine twined linen. 9 And thou shalt take two onyx stones, and grave on them the names of the children of Israel:
~~ooOoo~~
This page is adapted from the Glossary at Phoenixmasonry — Used with permission.