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Comment by vichu | Hacker News Reader

I highly suggest installing f.lux[1] on your computer and using a similar app on your phone like Twilight[2]. They've done absolute wonders for my sleep schedule and I actually feel noticeably sleepier as the night goes on when using them. And occasionally when I do turn them off (when working late at night), I feel more awake and alert which was an unexpected plus for when I'm under crunch but an unwanted side effect when I'm trying to get a good night's rest.

[1] https://justgetflux.com/

[2] https://play.google.com/store/apps/details?id=com.urbandroid...

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Or the free alternatives f.lux inspired, Redshift[1] (for desktop) and Red Moon[2] (for Android):

[1] http://jonls.dk/redshift/

[2] https://f-droid.org/en/packages/com.jmstudios.redmoon/

Unfortunately twilight gets much redder than these, and hence is much more helpful to (my) sleep.

> twilight gets much redder than these

Any reference to that? I've used Twilight before, and didn't notice that when moving to Red Moon.

Did you mean the default settings?

You have sliders for colour temperature, intensity and dim levels: https://raw.githubusercontent.com/LibreShift/red-moon/master...

You can create different profiles as well, plus limit brightness. I just tested a very very red filter (lower colour temp, higher intensity level).

On iOS 11 just long press on the brightness control to get a flux-like feature

Also, in Windows 10 go to system then display and turn on night light which also has a nice color temperature slider.

What I don't like about the night light built into W10 is that there is no gradual change in color temperature between day and night. I use redshift on Linux and it lives as a KDE Plasma applet sitting in the system tray: it knows when sun up and sun down are based on my lat / long, and it gradually changes the color temperature accordingly. Really sweet.

Have you filed a bug report for that through the Feedback Hub, yet?

What colour temperature are you domestic lighting bulbs?

Mine are 6500K, as are many in new developments in my area. Under such simulated daylight, changing screen temperature just makes it look muddy and malfunctional.

F.lux and its ilk are also counter-productive for anyone working with colour, like designers or photographers.

Obviously reducing blue light from screens is not going to be helpful in spaces lit by blue light. 6500k bulbs are not suitable for night time lighting.

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