Most ergonomic LED colour? What keyboard as "modding" base?

[Keyboarder]

Hi!

Having never owned a backlit keyboard, I wonder what commonly available LED colour is considered the most ergonomic choice (i.e. easiest on the eyes at night etc.)?

Furthermore, after having made my first steps into the mechanical keyboard world with a Steelseries 6Gv2, I decided to delve deeper into the subject matter and did some marathon research in the last few days.
Now, deprived of liquids and basic nutrients, I realized that the amount of keyboards to choose from as my current keyboard's successor/side keyboard is vastly higher than I had anticipated.
Hence I am wondering what you experts consider to be a worthy keyboard base to work with regarding future keycap "upgrades", switch changes and other modifications.

Thanks!

Keyboarder

[graboy]

I personally really like engraved keycaps, you can get some engraved PBTs on ebay. Most ergonomic LED color? Probably yellow. There's glasses that reduce eye strain while staring at a monitor for hours and hours, and they're tinted yellow. Personally I would just purchase whatever color you think looks best, and put the brightness down if you need to use it in the dark. Yellow can look cool, but wouldn't be my first choice for a backlit keyboard.

[Input Nirvana]

I'll throw this out there:
Red is used for low light situations on submarines and other low-light situations to allow the human eye to open more to allow more light in. If you carry that thinking...then doesn't it makes sense the keyboard scenario would be red leds?

[fossala]

Not blue, blue leds can give a lot of people headaches.

[Acanthophis]

Yeah, red is the most eye friendly colour in the dark.
Many cars' backlit instruments/buttons are in red or reddish.

White is obviously the most eye hostile colour in the dark. Greatest contrast which can hurt the eye.

[Joe221]

It not just the color but the adjustability. I originally had a CM Trigger and the lowest setting was BRIGHT red and it went up from there. I know have a Tesoro Durandal and the low setting is perfect, the letters are red and the look natural. From there you can kick it up to BRIGHT if desired.

[aggiejy]

Green is also used sometimes instead of red to prevent loss of night vision. Red may be better, but some tactical flashlights have both red and green modes.

[nathanscribe]

Not blue, blue leds can give a lot of people headaches.

God yes. I hate the current overabundance of blue LEDs. They seem to be on everything these days. I have a few items with white LEDs, they're not so bad. Still prefer red/amber though, with yellow/green close behind.

[kint]

Afaik green is considered to be the most easy and relaxing colour on the eye, hence Billird tables usually come with green cloth. Red is activating and raising awareness and aggressiveness, I'm pretty sure this is the reason behind red "tactical" illumintaion, yellow is the softer variant of red, and blue is rated as being cool, a softer white.
Now as for LED backlit, I'ld simply stick with common colour schemes in our surroundings, green being "o.k." red a warning signal. Of course this will be influenced by the brightness of the LEDs but I'ld propably go with a warm green tone or an amber tone. The yellowish green of ie cherrys old style LED panels is very relaxing.
personally I like the red and amber LEDs best, but red being relaxing ? no.

[Xingularity]

Higher-frequency light (the blue end of the spectrum) triggers a greater pupil contraction response from the human eye than does lower-frequency light (red); this is why astronomers and submariners use red lighting. Blue light at night-time (in particular, from blue standby LEDs) has also been correlated to decreased quality of sleep. One theory is that this is because we sense "daytime" by the blue light of the sky, our sleep cycle adjusts to consider this abundance blue light as "day".

tl;dr: Blue LEDs are awful.

P.S: Getting red LEDs on my Ducky Shine was the best decision I could have made.