cssmedia-queriesdarkmode

How to detect if the OS is in dark mode via CSS?

Is there a way to detect if the user's system is in Dark Mode via the browser?

We would like to change our site's design to be dark-mode friendly based on the current operating mode.

Solution

  • The new standard is registered on W3C in Media Queries Level 5.

    In case user preference is light:

    /* Light mode */
@media (prefers-color-scheme: light) {
    body {
        background-color: white;
        color: black;
    }
}

    In case user preference is dark:

    /* Dark mode */
@media (prefers-color-scheme: dark) {
    body {
        background-color: black;
        color: white;
    }
}

    There is also the option no-preference in case a user has no preference. But I recommend you just to use normal CSS in that case and cascade your CSS correctly.