4K HD Wallpaper: White-Pink Tulip
If you look for a tulip on a black background check this photography at full size. From courtesy of Rainer Berns it's available free under CC0 license and optimized here for use in desktop backgrounds, homescreen phones, blogs, social media, content marketing, webdesign projects...
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)