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I have a single-color image that has partial transparency. I have both normal and @2X versions of the image. I would like to be able to tint the image a different color, in code. The code below works fine for the normal image, but the @2X ends up with artifacts. The normal image might have a similar issue If so, I can't detect it on account of resolution. +(UIImage *) newImageFromMaskImage:(UIImage *)mask inColor:(UIColor *) color { CGImageRef maskImage = mask.CGImage; CGFloat width = mask.size.width; CGFloat height = mask.size.height; CGRect bounds = CGRectMake(0,0,width,height); CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef bitmapContext = CGBitmapContextCreate(NULL, width, height, 8, 0, colorSpace, kCGImageAlphaPremultipliedLast); CGContextClipToMask(bitmapContext, bounds, maskImage); CGContextSetFillColorWithColor(bitmapContext, color.CGColor); CGContextFillRect(bitmapContext, bounds); CGImageRef mainViewContentBitmapContext = CGBitmapContextCreateImage(bitmapContext); CGContextRelease(bitmapContext); UIImage *result = [UIImage imageWithCGImage:mainViewContentBitmapContext]; return result; } If it matters, the mask image is loaded using UIImage imageNamed: . Also, I confirmed that the @2X image is loading when run on the retina simulator. Update : The above code works. The artifacts I was seeing were caused by additional transforms done by the consumer of the images. This question could be deleted since it's not really a question anymore or left for posterity.

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