![]() ![]() Dealing with the prefers-color-scheme media query The rest is pretty self explanatory theme colours and the default application of the light theme. I probably wouldn’t do this on a production site, but it’s a pretty cool trick, and ever since I saw on Twitter that Lea Verou was demoing this technique in her talk, I really wanted to have a go We’re defining some SVG icons in CSS (I know, cool, right?).This is used to communicate to the JavaScript what the user’s preference is We define the -color-mode variable and set it to 'light' by default.There’s a big chunk in there, so let’s break it down a bit: button-icon-filter: var(-icon-moon-filter) Paste this into your CSS file (or CSS panel on CodePen): We’ll add our core presentational styles first. That’s all of the HTML that we need and the element only serves as a demo. This also benefits users that don’t (prefers-color-scheme: dark) set because they get a toggle to Yes, by default, when a user (prefers-color-scheme: dark) set, we should set a dark theme,īut we should also provide a switch for if the dark them isn’t working out for them. ![]() In your HTML file (or HTML panel in CodePen), add the following code:ĭark mode should be a user preference-not presumed I’ve built this in Codepen to make things easier for us all. You’re going to need a HTML file, a CSS file and a JavaScript file. If not, follow along to add the following base code. You can skip this section completely and fork the base code on CodePen. This is then maintained by local storage. I then use the toggle to switch the theme. The video shows that because my operating system is in dark mode, the demo honours it by default. What we are building Video shows a dark theme by default being toggled by a toggle button on click. It’s important to not make presumptions in design if you can help it, so I’m going to show you a quick and easy way to honour the user’s operating system preference by default, but also give them a toggle button to change their preference, manually. Oftentimes, though, folks will do one of the most dangerous things in design: make a presumption and roll out a dark theme if the user’s operating system preference is dark mode, and just leave it at that. Check the preferred theme using Javascript: if (window.matchMedia('prefers-color-scheme: dark').Ever since the prefers-color-scheme media query landed, folks have been rolling out dark themes for their websites as often as they use the entire React library to power a hamburger menu on their static blog.Ī lot of the time, folks rightly add a dark/light switch to give the user a choice. Or you are loading different text/images using Javascript ( can be a different API call) and you want a listener for the change in theme. In some cases, CSS only approach is not sufficient.įor example, if you want to know the user's preferred scheme for analytics. In the example above, you can see that even if the media query fails, the light theme will override the dark theme. So, you must give preference to one theme for such cases. If this media query is not supported by the browser, it will load all the CSS. The example below can be the simplest one to explain this point. And if your browser supports the dark theme, it will work for almost all the cases. This is the most straightforward way to implement the dark theme in your app. There are multiple ways to do this using CSS. I generally prefer to display the light theme in this case. no-preference: This means the system doesn't know the preference of the user.A dark background with relatively lighter fonts. dark: The user prefers a page with a dark theme.Typically, a light background with the dark fonts. light: The user prefers a page with a light theme.This query has been introduced in the Media Queries Level 5 draft and it can have the following values: ![]() It's just a simple media query: prefers-color-scheme Instead, it focuses on how to switch between the dark and the light theme as per your user's preference. This blog is not focused on whether to use the dark theme in your web app. ![]() This blog (which is using Casper theme by Ghost) also has this feature. You can also try toggling between these two themes on this blog. Also, it is useful to analyze what is your user's preferred color scheme. Also, it saves battery for some OLED/AMOLED screens.įor the UI/UX developers, it's a new ( but optional) challenge to build two separate and equally beautiful designs. People also believe that it helps them reduce eye strain, which is true only if the colors and their contrast are not chosen poorly. it has become very famous, especially among the developers. After the release of the dark theme in all the major platforms like macOS X, Windows 10, Android, etc. ![]()
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