The hex color #3befdd is a light color. The web-safe version is Hex
#33FFCC. A complementary color is
#C41022. The grayscale version is
#ADADAD. A 20% lighter version of the original color is
#6EFFFF, and Hex
#08BCAA is the 20% darker color. If the color is saturated by 10%, you get
#30F6E2. If the color is desaturated by 10%, the color
#46E8D8 is obtained.