A strong visual presentation displays unity through the repetition of multiple elements such as text, images, shapes. A color palette is also important to the unity of a Keynote or PowerPoint because the color palette shows a cohesive relationship between slides. Sometimes, slide designers feel creatively challenged when it comes to color. How can I create an effective color palette? What colors go well together? Do these colors go well with my content? A few important websites can help us answer these questions.
Design Seeds is my favorite color palette website. An image is the starting point, and from that image, a palette of colors is created. A slide designer can use a palette from Design Seeds in his or her Keynote presentations.
I’ve created an example of something you might see on Design Seeds: