It's arguably one of the most popular choices for a brand color, as it puts people at ease (think about the ocean and blue skies). Blue also expresses authority, trust, intelligence and wisdom.
It actually increase your heart rate, so it's no surprise that red is a passionate and visceral color. Red expresses action, desire and power.
If you're trying to be mysterious and rich, go for this popular hue. Purple also seems to exude royalty and elegance. This is a great color showing creativity.
Companies use this color if they want to appear prestigious, valuable and sophisticated. Like the dress, it's a classic.
You don't have to be an environmental company to go green. This colors says calmness, serenity, health and wealth.