Firstly, a colour palette, in the digital world, refers to the full range of colors that can be displayed on a device screen. When creating any type of 3D Rendeirng, our job is to make the images look stunning in every way possible, this is no small task. A color scheme is the choice of colours used in the design, this can be selected by the client or the designer before materials are added to the 3D model to create the image style and appeal. These can be selected by using different online tools such as color-hex. Likewise, colour schemes can be selected using reference images and mood boards. On the other hand, within product rendering you may want to draw attention to a button or user interaction using bright colours. Read here how Salesforce studied colour to make a better user experience.