Shift the color temperature of all screens to a warmer tone to reduce blue light.
Good to know
Works only on compositors with hyprland-ctm-control-v1, in practice Hyprland 0.45.0 or newer.
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Warm your screen's color temperature and adjust gamma on Hyprland, by hand, from scripts, or on a daily schedule.
What you can do with hyprsunset
Dim or brighten the picture on all screens by setting display gamma.
Good to know
Gamma above 100% needs --gamma_max raised; the maximum is 200%.
Change temperature, gamma or identity of a running hyprsunset through its IPC socket.
Start hyprsunset with your session through a systemd user service.
3 other tools for systemd user serviceApply different temperature and gamma settings at set times of day from a config file.
Good to know
Times are fixed clock times; nothing in the code follows sunrise or sunset.
Before you upgrade hyprsunset
Newest firstUpgrade Hyprland to 0.48.0 or newer before upgrading to hyprsunset v0.2.0.
Read the evidence
A second hyprsunset no longer starts while one is running.
Read the evidence
hyprsunset release history 6
Go back to the scheduled profile after changing settings by hand.
Details
New IPC commands: reset (whole profile) or reset temperature|gamma|identity, profile (prints time, temperature, gamma and identity of the current profile) and identity get.
Also: Fixes high CPU use from a busy loop in the event loop; max-gamma now applies without profiles.
v0.4.0.
Improved: Change temperature, gamma or identity of a running…Now works: Shift the color temperature of all screens to a war…Now works: Dim or brighten the picture on all screens by setti…
Seeded by @iluxav with Claude Code (canido)
Keep scheduled profiles correct after the computer wakes from suspend.
Details
Scheduling is recalculated after suspend, and the systemd user unit installs to the right directory.
v0.3.3.
Now works: Apply different temperature and gamma settings at s…Now works: Start hyprsunset with your session through a system…
Seeded by @iluxav with Claude Code (canido)
Rely on scheduled profiles switching at the configured times.
Details
Fixes how the next profile switch is scheduled.
v0.3.2.
Now works / inferred: Apply different temperature and gamma settings at s…
Seeded by @iluxav with Claude Code (canido)
Read the evidence
Switch temperature and gamma automatically at set times of day.
Details
New hyprsunset.conf in the hypr config directory with max-gamma and profile blocks, each with time (HH:MM), temperature, gamma and identity; hyprsunset applies the profile for the current time and switches at the next one. Adds --verbose and -v/--version. Groups v0.3.0 and v0.3.1.
Also: hyprsunset now exits on SIGINT and SIGTERM; bad IPC input no longer crashes it.
v0.3.1. Documentation moved to the Hyprland wiki.
Added / inferred: Apply different temperature and gamma settings at s…Now works: Shift the color temperature of all screens to a war…
Seeded by @iluxav with Claude Code (canido)
Change temperature and gamma while hyprsunset runs, from scripts or keybindings, without restarting it.
Details
New -g/--gamma (default 100%) and --gamma_max (up to 200%). An IPC socket in the Hyprland runtime directory accepts temperature, gamma and identity commands, with +N or -N for relative steps. Only one instance can run at a time, and a systemd user service ships with it.
v0.2.0; needs Hyprland 0.48.0 or newer.
Added: Dim or brighten the picture on all screens by setti…Added: Change temperature, gamma or identity of a running…Added: Start hyprsunset with your session through a system…Action requiredBehavior changed: Shift the color temperature of all screens to a war…
Seeded by @iluxav with Claude Code (canido)
v0.1.0
First release
First release
Warm the color temperature of your screens on Hyprland to cut blue light.
Details
First release. hyprsunset -t <kelvin> sets the temperature (default 6000K); -i applies the identity matrix, leaving colors unchanged.
Build from source; needs Hyprland 0.45.0 or newer for hyprland-ctm-control-v1.
Added: Shift the color temperature of all screens to a war…
Seeded by @iluxav with Claude Code (canido)