Dark Mode in One Line of Code!

By  on  

Dark mode has seemingly become the desired visual mode for websites and mobile apps alike. Dark mode is easier on the eyes, especially for those like me who like to burn the midnight oil by coding and reading tutorials. Unfortunately not all websites offer dark mode, so it's up to me to remedy the situation.

Though it's not a true "dark mode", you can use CSS' filter to create dark mode of your own:

html {
  filter: invert(1);
}

Inverting colors completely via 1 will make that light-themed website much more comfortable on your eyes. It's important to realize that developers shouldn't consider this a long-term solution, as it's a quite lazy remedy and doesn't lend well to branding.

Recent Features

  • By
    Camera and Video Control with HTML5

    Client-side APIs on mobile and desktop devices are quickly providing the same APIs.  Of course our mobile devices got access to some of these APIs first, but those APIs are slowly making their way to the desktop.  One of those APIs is the getUserMedia API...

  • By
    6 Things You Didn’t Know About Firefox OS

    Firefox OS is all over the tech news and for good reason:  Mozilla's finally given web developers the platform that they need to create apps the way they've been creating them for years -- with CSS, HTML, and JavaScript.  Firefox OS has been rapidly improving...

Incredible Demos

  • By
    Elegant Overflow with CSS Ellipsis

    Overflow with text is always a big issue, especially in a programmatic environment. There's always only so much space but variable content to add into that space. I was recently working on a table for displaying user information and noticed that longer strings were...

  • By
    Firefox Marketplace Animated Buttons

    The Firefox Marketplace is an incredibly attractive, easy to use hub that promises to make finding and promoting awesome HTML5-powered web applications easy and convenient. While I don't work directly on the Marketplace, I am privy to the codebase (and so...

Discussion

  1. Nice trick !

    I would add exactly the same on all images with

    img {
    filter: invert(1);
    }

    Then you are even closer to a dark mode ;)

  2. Adilbim

    I just tried it here and it worked, Thanks for the info.

    here is the code I used:

    document.querySelector('html').style.filter = 'invert(1)'

  3. Alex

    I love filter for this! You can also make the inversion less harsh by adding to the filter list:

    /* Use hue-rotate for optional color adjustment */
    html { filter: invert(1) contrast(0.95) saturate(0.5) hue-rotate(180deg);
    
  4. Daniel

    Never EVER use this trick other than for a quick preview.

    CSS filters on large areas are really bad for scrolling performance.

  5. This isn’t quite dark mode. This is just an invert which makes images look like crap. Still, neat trick.
    Thanks

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!