The hex color #3EC4DB is a light color. The web-safe version is Hex
#33CCCC. A complementary color is
#C13B24. The grayscale version is
#9F9F9F. A 20% lighter version of the original color is
#71F7FF, and Hex
#0B91A8 is the 20% darker color. If the color is saturated by 10%, you get
#34C8E1. If the color is desaturated by 10%, the color
#48C0D5 is obtained.