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How to invert colors using CSS

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How to invert colors of elements and images using CSS

I had this problem. I added a “black on white” image on a page, only to realize that with dark mode, my page correctly changes the background to black, but the image remains white on black.

Kind of bad.

So I added this rule to my CSS to detect dark mode and automatically invert the color of the image:

@media (prefers-color-scheme: dark) {
  .my-image {
    filter: invert(100%);

It’s not 100% accurate in my case, because my dark background color is not perfectly black, but it’s better than nothing.

To make things perfect you could also add the image using a CSS background image instead of an img tag in HTML, and I could easily swap that in dark mode.

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