Usability

The psychology of color as it relates to persuasion is one of the most interesting — and most controversial — aspects of marketing. To alleviate this trend and give proper treatment to a truly fascinating element of human behavior, we’ve reviewed a…

Source: www.huffingtonpost.com

Often-cited examples of a boost in conversions due to a change in button color, mislead people because a conversions level uplift after changing a button from green to red, for instance, do not prove any magic power of one color over another.
The reason why a change in a button color can boost conversions is due to the contrast that it creates, the so called “isolation effect”, which is needed to get high conversions.
Generate this isolation effect when testing color palettes, in order to create contrast in your web design and guide people to important action areas.