Hiya;
So I will break this up into two sections; the numbers appearing on the other team & the numbers appearing on your (the attacker) team.
OTHER Team
i.e. the Defending team in a raid, the Titan, the mobs in map farming etc…
Red = Strong Damage (2x Normal Damage)
Yellow = Normal Damage
Grey = “Weak” damage (0.5x Normal Damage)
Teal = Crit Damage (2x Normal Damage)
Note on “Strong” or “Weak” damage AND Crit at the same time:
Some Additional Threads on calculating of the damage:
On YOUR Team
Here the colours mean something different.
Redy Orange = Damage (either from slashes, Minions, skills etc… There is no “elemental strong or weak” colours)
Green = Healing
Teal = Crit Damage
Light Blue = Over-Heal (i.e. from a Health Boost Hero like Gullinbursti or Heimdall)