All light waves travel at the same speed in a vacuum, which is approximately 299,792,458 meters per second (m/s). This is often rounded to 3 x 10⁸ m/s.

This speed is known as the speed of light and is a fundamental constant in physics.

Important Note: The speed of light can change when it travels through different mediums (like water or glass). However, in a vacuum, all light waves travel at the same speed regardless of their frequency or wavelength.