Sampled from 4 of ProTech マイナンバーIC認証's App Store screenshots — background, accent and theme, measured by LaunchShots (not something Apple publishes).
#24549C bg
#426BA9
#6494C4 accent
#FFFFFF text
ProTech マイナンバーIC認証は、株式会社ショーケースが提供する「マイナンバーカードのIC情報を活用した本人確認(公的個人認証)を行う」アプリです。本アプリを利用することにより、マイナンバーカードのICデータの取得と有効性の判定が可能となり、安全に個人認証を行うことができます。 ※本アプリは、単独で利用できません。ProTech マイナンバーIC認証をご利用のWEBサイトから本アプリを呼び出すことによりご利用頂けます。
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 4 screenshots above are ProTech マイナンバーIC認証's answers to those questions — they're public, they're real, and they made it through Apple's review.
What the numbers say: ProTech マイナンバーIC認証 runs a dark set with one background colour (#24549C) 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, #6494C4, 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.