Color Harmony and Color GuideOne of the most important aspect in designing is choice of colors. Most often newbie designers, and even the experienced ones, tend to use a lot of colors in designing. To the extent that their design become over crowded and so confusing because of lots of colors.
Color harmony a topic in Color theories that explains how colors relate to each other. If you know a bit of this Color Harmony Theory, you would know before hand, what colors to use for your graphic design.
In aid to help you apply the Color harmony, Adobe Illustrator and Photoshop has a feature called Color Guide. Also Adobe have a special website for this that you can use for any image processing software. You can access it at Adobe Color CC.
Here's a quick tutorial in how to use the Color Guide in Illustrator and Photoshop. Hope this will be helpful