What are each of the frequencys of ROYGBIV?

Answer 1

color ~ wavelength interval ~ frequency interval

red: ~ 625–740 nm ~ 480–405 THz
orange: ~ 590–625 nm ~ 510–480 THz
yellow: ~ 565–590 nm ~ 530–510 THz
green: ~ 500–565 nm ~ 600–530 THz
cyan: ~ 485–500 nm ~ 620–600 THz
blue: ~ 440–485 nm ~ 680–620 THz
violet: ~ 380–440 nm ~ 790–680 THz

Answer 2

Red: 625-760 nm
Orange: 585-620 nm
Yellow: 565-590 nm
Green: 520–570 nm
Blue: 420-490 nm
Violet: 380-420 nm

There are some overlaps and gaps, because descriptions of colors are partially subjective.

Answer 3

Go with Krynne's answer. Don't get confused between wavelength and frequency. Most people are in the habit of talking about wavelength when talking about light, but your question specifically asked about frequency.

Answer 4

See attached link - A colour spectrum showing the frequency of all the colours from Red (around 380 Terahertz) to Violet (around 780 terahertz)