A large part of a color's message is part of our own built in instincts of what a color means. We are often reminded of tranquility when we see blue, as it is representative of blue skies and calm blue waters. Blue is also one of the first colors we see as infants and on the side of physics, blue is on the low end of the visible spectrum and therefore less jarring. Blue comes in many forms from red side blues that include periwinkles and cobalt blues to deep midnight blue, navy, sky and baby blue. The green side of blue includes aquas and peacock blues.
Bright blues are eye catching and make an impact.
Subdued blues, such as navy and dusty blue, are more serious and trustworthy. Green as a color denotes friendship and conversation. Banks use green because it is comforting while at the same time it reminds us of money. It can be a high end green such as forest green or a jazzy green such as lime. It is a warm, sunny, exciting color and is connected with youth, vibrancy and outgoing personalities.