Download Hi everyone. Welcome to the Introduction to Dark Mode session. My name is Raymond Sepulveda, and I'm a macOS designer on the Human Interface Design team. For the first half of today's session, I'm going to be going over some of the design principles that went into the design of Dark Mode, as well as some of the design considerations that you should take into account when updating your own applications to take advantage of Dark Mode.

Then, for the second half of the session, my engineering colleagues Rachel Goldeen and Taylor Kelly from the Cocoa Frameworks team are going to be going over how to adopt and support Dark Mode using an example application that they built together. The three of us are super excited to share all of these details with all of you, so let's jump right in. As we announced in yesterday's keynote, macOS 10.14 is going to be getting a new interface appearance, and we call it Dark Mode.

The new design is very attractive and engaging, while at the same time being very calm and understated. These are great qualities for an interface, and they make it great for creative professionals who are dealing with heavily detailed images and colorful assets such as images and video assets. But, in actuality, it's actually great for just about any type of user who is looking to concentrate or focus on any given task at hand. So, whether you're trying to concentrate on writing the next great novel or you're trying to read one without disturbing your bedside partner, Dark Mode is really great for either type of situation.

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The interface shares a lot of family resemblances between the light appearance and the dark appearance, and that is because we wanted to encourage users to switch between both appearances easily and find the one that really best suits their needs. And so it was very important that things like control metrics, window layout, and the distribution of translucent materials be the same as much as possible between both appearances. As such it's also equally important that all of your applications take full advantage of both appearances so that they update correctly between both appearances no matter what the system is running under. You really don't want to be that one light appearance that's stuck in dark appearance. All in all, we're super happy with how the design turned out, and we are really anxious to see what you guys are going to turn your apps into as soon as you get hands on the developer beta and start adopting the Dark Mode.

Aside from Dark Mode, another new interface feature that we added into macOS 10.14 are accent colors. Previous releases of macOS offered two accent colors, blue and graphite, but for macOS 10.14, we've expanded the color palette to include eight fun colors to really help you personalize your Mac. So, if you're like me and you love the color red, you're going to immediately switch over to the color red [laughs]. If orange or yellow are more of your preference, you're going to switch over to those, and we make those available as well. I should note that the accent colors are not just a sub-feature of Dark Mode, but they're also available in Light Mode. So if you prefer Light Mode but want green accent color, you can do that as well.

So, now that we've covered a little bit of the basics of what Dark Mode is and what accent colors are also, let's dive a little bit deeper into some of the design principles that went into Dark Mode. At Apple, when we begin a new design project, we like to establish a set of design principles to help guide us throughout the entire design process. And, with Dark Mode, there were three in particular that we referred to quite often throughout the entire process. The first one is the most straightforward, so let's just jump right into that one, and that is that dark interfaces are cool, period, right? They are almost effortlessly cool in a way that light interfaces sometimes kind of struggle to be. But why is that, really? Part of it is because we all have these notions of what a dark interface is and what a dark interface looks like.

And a lot of that is fed into us by what we've seen in pop cultures in things such as sci-fi movies and action movies. So much so that if I were to go around the audience and ask everyone to give me one-word association of what a dark interface is to them, I'd get responses such as cool, of course; slick; professional; futuristic; and even beautiful. So going into the design for Dark Mode, we really wanted to acknowledge all of these aesthetic associations that we all have with dark interfaces, while at the same time embracing a lot of the real benefits that a dark design offers you, such as a higher contrast for typography.