On the Microsoft website you can find very useful information of how to prepare your PowerPoint presentation. Related to images, I found some important information of how to choose and combine the right colors to delivery to the audience the properly message. Read the information below to understand how it works:
Understanding the relationship between colors
To understand color, a good place to start is the color wheel. The color wheel contains 12 hues, and illustrates the relationship between colors.
On the color wheel, the 12 hues are separated into three distinct groups:
The primary colors: red, blue, and yellow. In theory, all other colors can be derived from these three.
The secondary colors: green, violet, and orange. These are created by combining the primary colors.
The tertiary colors: red-orange, red-violet, blue-violet, blue-green, yellow-orange, and yellow-green. These are made from combinations of the first six colors.
Colors have specific relationships depending on their location on the color wheel.
Colors opposite one another are called complements. Complementary colors contrast each other to create a dynamic effect.
Colors directly next to each other are called analogous. Each color has two analogous colors (one on each side of it). Analogous colors used together create a harmonious and unified feeling because two of the colors contain the third. In the example below, the first color (yellow) blends into the third (the green) by way of the middle color (yellow-green).
