Just simple RGB color tester. For device test, web design, photo lighting, etc. RGB to Hex. If you select Red, Green, and Blue values each numeric RGB values are converted a hex color string Press "FULL SCREEN", display automatically lights maximum light level. Press the screen again, back to color select scene.
Clark & Company is the developer of the app which refers to the Tools category. Over 5K users set up RGB Screen and its most recent update was released on Dec 23, 2015. On Google Play, this application was rated 3.9 by its users.
Get the installation package of RGB Screen 1.01 that is available for free and take a look at users' reviews on Droid Informer. The app is built for Android 2.2 and higher. It's safe to download the app.