Each World of Warcraft class has its own color defined to it in the default UI, per the raid system. The below color codes are held in the RAID_CLASS_COLORS table in FrameXML/Constants.lua.

Classe	RGB (0-255)			RGB (0.0-1.0)			RGB Hex (00-FF)	Description
Death Knight	196	30	59	0.77	0.12	0.23	#C41F3B	Red
Druid	255	125	10	1.00	0.49	0.04	#FF7D0A	Orange
Hunter	171	212	115	0.67	0.83	0.45	#ABD473	Green
Mage	105	204	240	0.41	0.80	0.94	#69CCF0	Light blue
Monk	85	138	132	0.33	0.54	0.52	#558A84	Jade green?
Paladin	245	140	186	0.96	0.55	0.73	#F58CBA	Pink
Priest	255	255	255	1.00	1.00	1.00	#FFFFFF	White
Rogue	255	245	105	1.00	0.96	0.41	#FFF569	Light yellow
Shaman	0	112	222	0.0	0.44	0.87	#0070DE	Blue
Warlock	148	130	201	0.58	0.51	0.79	#9482C9	Purple
Warrior	199	156	110	0.78	0.61	0.43	#C79C6E	Tan

It has been announced by Zarhym that the current Monk class color is "jade green".^[1]

References Edit