490 nm

What Color Is Light At 500 Nm? colour* wavelength (nm) frequency (1014 Hz) green 550 5.45 cyan 500 5.99 blue 450 6.66 violet (limit) 400 7.50 What color is 540 nm light? Color Wavelength interval Frequency interval Orange ~ 635–590 nm ~ 480–510 THz Yellow ~ 590–560 nm ~ 510–540 THz Green ~ 560–520 nm