The Google Allo colors are Google Allo Selective Yellow, we recommend using the Google Allo color palette for personal projects and in the case of commercial use to visit the company website. The color codes: RGB, CYMK for print, and Hex for web HTML/CSS. Google Allo Official Website
Download the Google Allo color scheme palette image with the color hex codes as a single image. These are the suggested colors to be used for digital media.