Blue Circle
This is a solid circle with blue color. This emoticon can mean "blue sky and clear sky", and sometimes it can be extended to express melancholy, sadness, coldness, aloof and so on.
The circular three-dimensional sense depicted by emojidex and Samsung platform is relatively strong, similar to a ball; A white line and a small white dot are added in the upper right corner of the circle depicted by au by KDDI and Docomo platforms, representing luster. In addition, the circles depicted by other platforms are plane figures. OpenMoji and Microsoft platform depict black edges on the circular periphery. The circles depicted by Messenger platform are quite different, not strictly.