Color in storyboard not matching UIColor
Xcode 8+, iOS 10+
I recently faced this problem and none of the posted answers did it. It turns out that with the release of iOS 10 SDK, the UIColor initializer init(red:green:blue:alpha:) now uses the extended sRGB range, so you have to set accordingly when configuring your color values on the Storyboard.
See Apple's documentation: https://developer.apple.com/reference/uikit/uicolor/1621925-init
I had the same issue. I was seeing runtime RGB values of the colors from storyboards not matching UIColors created at runtime in code. I was able to fix this in storyboards by setting the color to be "Generic RGB" (vs the default of sRGB) when configuring it. Here is a screenshot of what I'm talking about in IB:
Swift 3
In my case what was exactly accurate was Color LCD:
I hope I've helped :-D