Humans have a sight that can only take in 5 basic colors of the rainbow while the other two are invisible to the human eyes viz, ultraviolet and infrared.
There are only certain colors that businesses use in their logos, in order to catch the attention of the customers as well as to retain that attention. A badly designed logo never takes a company much further which is why the font as well as the color selection is quite crucial.
It has been found that the font Helvetica is being used in every one in five logos belonging to the top brands of the world. But that does not mean that to get your rand logo noticed, you should have to use Helvetica only but rather than that, it would always be better to define your logo in such a way that it defines your business as well.