I think some of it is subjective, but also wavelengths are affected by absorption through your skin… actually, @Satur9 has answered this previously…standby
Here you go
The Green LEDs have the greatest light output, but that doesn’t necessarily mean they’ll appear the brightest. There’s other factors to consider, like the absorption of certain wavelengths of light by your tissue, and the perception of brightness in the human eye. We’ll all have to engage in some more testing, but I would wager that the red xSIID will subjectively appear as bright as the Green.
If I were you, I wouldn’t be so concerned with “brightness”. Pick the color you like. They’re all cool.
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