
For the Ruby Tuesday logo there really is no color harmony. They simply chose a color and put black with it. Which is very simple, yet works just as well as complimentary or contrasting or any other color scheme. I don't think it necessarily has a particular meaning other than simple.

The LG logo is similar to the Ruby Tuesday logo. LG chose a color and put it with gray. I am not really sure why they chose these colors. I do not think they have a particular meaning either, other than the fact that it is also simple.

This Bank of America logo uses contrasting colors of blue and red. I feel the reason they chose these colors is because blue and red are the colors of America, therefore they are the perfect colors for the Bank of America. It symbolizes exactly what America symbolizes...freedom.