Answer: Every electromagnetic wave moves at the same speed in vaccum.
Explanation: The given speed of light is the speed of light in vacum, and it is the same for every electromagnetic wave (visible light, infrared, ultraviolet, etc)
So every part of the electromagnetic wave spectrum moves at this speed.
If we where in a different medium (any thing that is not vacum) the velocity of the light is slightly smaller, and even is different for diferent frequencies.
