Here's something that could be of interest. I opened the DigitalColor Meter application that comes with OS X and noticed each letter in the link I tested has multiple shades of blue. I wonder if the larger color gamut we have is allowing us to see these shades that other-wise went unnoticed. Since the font is so small it all blurs together and no longer looks pure blue.
Some examples:
Center of the text is all blue
The selection near the edges has some red which will give blue a purple tint since red and blue makes purple.
Does anyone with an external monitor or an older Mac see the same if you try using the DigitalColor Meter? If you choose to try please use google news for consistency.
On a side note, this is still blue on my screen
Grabbed from an internet search...