The hex color #3fbefc is a light color. The web-safe version is Hex
#33CCFF. A complementary color is
#C04103. The grayscale version is
#A8A8A8. A 20% lighter version of the original color is
#72F1FF, and Hex
#0C8BC9 is the 20% darker color. If the color is saturated by 10%, you get
#34C0FF. If the color is desaturated by 10%, the color
#4ABCF4 is obtained.