The hex color #3cc9f8 is a light color. The web-safe version is Hex
#33CCFF. A complementary color is
#C33607. The grayscale version is
#AAAAAA. A 20% lighter version of the original color is
#6FFCFF, and Hex
#0996C5 is the 20% darker color. If the color is saturated by 10%, you get
#31CCFF. If the color is desaturated by 10%, the color
#47C6F0 is obtained.