They claim they wanted to be as far away from the name DVD as possible in order to distinguish themselves, but some say they choose blu instead of blue so they could copyright the name.

ENGADGET: The format war: What's in a name? HD

One of the metrics that is used to gauge the format war is Google trends and HD DVD is clearly ranked considerably higher, but if you add the common misspellings of both formats the chart looks different and it is clear to see that many people misspell Blu-ray as Blue-ray.

ENGADGET: The format war: What's in a name? HD

Current Blu-ray lasers emit light in the blue part of the electromagnetic spectrum (about 405 nm wavelength).

FORBES: What is the Future of Optical Disc Technology and who will Use It?

Nine consumer electronics firm agreed in February to standardize and promote a new format called "Blu-ray Disc" that uses a shortwave blue-violet laser to read more than two hours of high-definition content stored on a DVD-size platter.

FORBES: What's Coming

Two new celeb moms went serene with blue: Beyonce with Blue Ivy for her daughter, and Alicia Silverstone with Blu as a middle name for her son Bear.

CNN: The top baby names of 2013

On the opposite side, there's a Blu-ray drive (also with a large button), and a power button that glows blue.

ENGADGET: HP TouchSmart 610 review