Sampled from 4 of CMC Speed Test's App Store screenshots — background, accent and theme, measured by LaunchShots (not something Apple publishes).
#ECECEC bg
#CFCFCF
#3C7CE4 accent
#111111 text
The application enables you to accurately and reliably measure your Internet connection speed over both mobile networks and Wi-Fi. It also allows you to submit a report to the CMC if you experience Internet connectivity issues and provides direct access to the CMC Support Center. In addition, the application displays the speed and mobile network coverage of operators in your current location. The application collects only network quality data, which is completely anonymous and securely stored in the Communications and Media Commission's database. This data is used exclusively for regulatory purposes, including monitoring the quality of services provided by Internet and mobile network operators, identifying areas with connectivity issues, and detecting locations where network performance is insufficient to support everyday digital services. To improve the quality of Internet services …
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The 7 screenshots above are CMC Speed Test's answers to those questions — they're public, they're real, and they made it through Apple's review.
What the numbers say: CMC Speed Test runs a light set with one background colour (#ECECEC) carried across every screenshot — the listing reads as a single poster when the shots sit side by side in search results. The accent colour we picked up, #3C7CE4, is the one to reuse for badges, arrows and highlighted words if you borrow this look. Hit Use this style to open the editor with these exact colours and drop your own screenshot in.
Notice the first screenshot in particular. It's the one users see in search results and on the product page, and it's where most apps spend their best caption and tightest design. Look at the proportion of background to phone, where the text sits, what one thing the image is trying to communicate.
Want to see how other Utilities apps approach the same problem? Browse more Utilities apps in the showcase.
Open LaunchShots and design your App Store & Google Play screenshots — pick a device frame, drop captions, ship in minutes. Free, in your browser.
Open the screenshot editor →Closest background + accent colours among the listings we've analysed — useful when you want to see the same palette handled by a different team.