The hex color #15e3db is a light color. The web-safe version is Hex
#00CCCC. A complementary color is
#EA1C24. The grayscale version is
#9C9C9C. A 20% lighter version of the original color is
#48FFFF, and Hex
#00B0A8 is the 20% darker color. If the color is saturated by 10%, you get
#08EAE1. If the color is desaturated by 10%, the color
#22DCD5 is obtained.