A HEX code is a 6 digit code that represents a color displayed on the web. Every web color has a distinct code.
Figuring out your hex colors
There are lots of tools online that can help you figure out what your hex colors are. We like https://image-color.com/.
Upload an image of your logo to https://image-color.com/. You can paste in a url or you can click the green "Download" button and choose from the files on your computer.
A color palette will appear with the hex codes for each color. All you need to do is copy the code labeled "HEX".