wilsongramer / systemcolor

Use iOS 13's semantic UIColors on iOS 12 and under.

SystemColor

iOS 13 introduced semantic UIColors like .label, .systemBackground, etc. that will automatically adapt to light or dark mode. These colors aren't available to earlier versions of iOS, however, so to use them you'd have to litter your code with if #available everywhere.

To fix this, I generated a file that includes all of the new iOS 13 colors with light-themed fallbacks to support older iOS versions. To use it, just reference colors using the SystemColor type instead of UIColor and you should be good to go!

Installation

Add via Swift Package Manager:

.package(url: "SystemColor", .branch("master"))

Example

self.view.backgroundColor = SystemColor.systemBackground
self.label.textColor = SystemColor.label
// etc.

How did I make this?

I used a script to iterate over all of the new colors mentioned in the documentation, extracted their RGB values, and generated a Swift file with this information. You can check out the script in the generator.swift file.

Contributing

If I missed a color or Apple adds more, add them to the file and submit a pull request!