It is very important for a logo designer, to choose the right color combination for the exact theme. Such as if you are designing an NGO logo, you need to understand the goal, mission vision and the organization is stands for what, what kind of massage they want to convey through the logo about the organization. Similarly you need to study the same thing for the other organizations too.
You need to choose the colors keeping this in mind.
Always choose eye catching but soothing combinations. Such as: light colors.
Sometimes you need to choose joyful color combination also especially for the youth base organization’s logo. Such as: Neon, red, blue, etc, that pops the logo.
Always keep contrast colors in the background. If the logo’s color is darker, background must have to be contrasting.