What is digital culture focused design?

Korean electronices companies have been interested in the word of "digital" since about 1999. There were many design development projects to define " the digital product". Of course I participated in several projects at that time. However I don't always know what is digital design. Above is one of the results of inhouse competition about digital design.
At that time most product designers often used bule lighting clor for their design work. Why do most people consider digital color as blue?

Even though this is some different story, I want to define design as below.

You can know only as much as you love.
You can see only as much as you know.
You can feel only as much as you see.
You can design only as much as you feel.