Does ultraviolet look purple to the human eye?
No. Normal human eyes are unable to see ultraviolet at all. People with aphakia say it looks pale blue. The author of this answer says it looks yellow but may be unique in this perception.
White light, like sunlight, is made up of many different colors of light. We see this when raindrops split the light into a rainbow. The purple part of a rainbow is violet light. Some parts of the light spectrum are not visible to the human eye. The invisible part next to purple (violet) is called the ultraviolet spectrum.