Design software that automatically saves and exports your document in CMYK settings is the best way to avoid last-minute problems with colour conversions.
Suppose you’ve designed some artwork in software that produces RGB documents, such as Adobe Photoshop or Illustrator. In that case, converting it into a printable format can result in colour variations because of how colours are created (additive versus subtractive). It's better if design programs make files based on these principles so there will be no mistakes when sending them for printing. If this isn't possible, we have a step by step guide about changing from RGB to CMYK, which you may need later down the line!
So, I can change my colours to CMYK or not. It’s up to you!
Do I need to change my colours? When you upload your artwork on our online proofing tool, it will automatically be converted. So whether designing with CMYK is beneficial for me depends on how much control I want over the final design elements in printed form. The benefit of using CMYK mode while creating designs is knowing what colour combinations we will use when printing them because they match exactly with the printer's ink tablets used during the printing process. In contrast, if one chooses RGB mode, there might be some difference between display screens that show us what looks like the finished product but has a different result once actually produced due to lack of uniform precision.