Why facebook is blue?

[SRUTHY]

Facebook has gone
through some major
redesigns in the past few
years but one part that
has more or less stayed
the same in all those
years is the site’s blue
color.
Everything is so blue
about Facebook right
from the sign-up page
to the logo, their mobile
app and even the site
pop-ups that have
shades of blue. Why?
I was recently listening
to an episode of Twig
where host Leo Laporte
pointed to this New
Yorker story on Mark
Zuckerberg that seems
to explain why Facebook
is all blue in color.
The young Facebook
founder is color blind
but can see blue:
Colors don’t matter
much to Zuckerberg;
a few years ago, he
took an online test
and realized that he
was red-green
color-blind. Blue is
Facebook’s dominant
color, because, as he
said, “blue is the
richest color for me
– I can see all of
blue.”