4.32 x 10^-19 J (apex)
The light of a wavelength 460nm appears blue to the human eye.
The absorption spectrum of methylene blue shows peaks around 600-660 nm due to its blue color. Methyl orange, on the other hand, shows peaks around 425-465 nm, which corresponds to its orange color. These peaks indicate the wavelengths at which these dyes absorb light most efficiently.
1. For plants in the growth or 'vegetation' stage; blue (440-460nm) spectrums is considered the ideal spectrum. Plant still respond well to the red spectrum during this period. For plants in the bloom / flowering / 'budding' stage; red (630-660nm) is considered the ideal spectrum. Plants also respond well to additional colors being added, as we try to replicate the sun which has a nearly infinite number of light spectrums.