Colour Hex numbers are numbers that represent a specific colour in the colour spectrum. They are very useful when trying to create a website or design and you need precise colours. You can generate a Hex number in your design settings.
Colour can be represented in a number of different ways, RGB, CYMK, HSL and Hex. An easy tool to move between the different values is HTML Colour Codes. Rocketspark uses Hex codes to determine the colour selected from a colour palette.
Once you have the colour you want as a hex code, navigate to the design setting you want to edit and paste the code into the colour picker.