Screen Color Temperature
Color Temperature adjusts screen color to match the surrounding environment, according to the extension listing.
About Screen Color Temperature
Screen Color Temperature (Change Lux) is a lightweight browser extension that adjusts screen color warmth to reduce blue light exposure, particularly for use in dark environments or at night. It does not adjust screen brightness, instead applying a warm color overlay to all websites by default, with options to customize red, green, blue values and opacity, plus a whitelist to exclude specific sites from adjustment. The extension is available for Firefox, Chrome, and Opera across all operating systems, and includes a simple toolbar popup for on/off control and settings adjustments.
Key features
- Adjusts screen color temperature from cool to warm for day or night use
- Toolbar popup UI with controls to adjust color temperature
- ON/OFF switch for quick enable or disable of the extension
- Applies color adjustment to all websites with optional whitelist
- Keyboard shortcuts to add sites to the exclusion whitelist
- Options page with customizable RGB values and opacity settings
Best for: Users who browse the web in dark environments or at night to reduce eye strain and blue light exposure without adjusting screen brightness.
Good for
- Lightweight design that does not slow down browsing
- Simple one-click activation via toolbar popup
- Customizable color and opacity settings with auto-save
Watch out for
- Currently only supported on Firefox, Chrome, and Opera browsers
- Color adjustments apply to all websites by default, requiring manual whitelisting for exclusions
Screen Color Temperature at a glance
- Category
- Software & Utilities › Browser Extensions
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Browser Extensions
Screen Color Temperature alternatives
Tools and sites you could use instead, ranked by how closely they match.
Build a custom new-tab page with Anori, a browser extension offering folders, color schemes, and widgets such as tasks, notes, and weather.
Capture screens with Easy Screenshot, which presents capture options in a browser popup.
Smooth Key Scroll lets users adjust scrolling speed and choose alternative directional key layouts.
ColorZilla provides eyedropper, color picker, color analyzer, and CSS gradient tools for Firefox and Chrome.
Stylebot lets users change webpage colors, fonts, and other styles with a basic editor or custom CSS.
Tint webpage colors by time of day with Circadian, a browser extension offering daytime, sunset, and bedtime settings.
Open source
24 alternativesPopular in Browser Extensions
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Screen Color Temperature FAQ
What is Color Temperature (Change Lux)?
It is a browser extension that adds a warm color overlay to websites to reduce blue light exposure, ease eye strain in dark environments, and support better sleep. It is activated by opening the toolbar popup UI and turning the addon on.
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