Lea Verou • 3/30/2021

Dark mode in 5 minutes, with inverted lightness variables

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This article explains a quick method to implement dark mode in CSS using inverted lightness variables. Instead of creating separate color variables, it shows how to override lightness values in a media query to automatically generate a dark theme from existing light colors. The technique works with HSL colors and provides a basic dark mode foundation that can be refined later.

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#css variables #dark-mode #hsl
Dark mode in 5 minutes, with inverted lightness variables

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