The hex color #3E9FEE is a light color. The web-safe version is Hex
#3399FF. A complementary color is
#C16011. The grayscale version is
#999999. A 20% lighter version of the original color is
#71D2FF, and Hex
#0B6CBB is the 20% darker color. If the color is saturated by 10%, you get
#35A0F7. If the color is desaturated by 10%, the color
#479EE6 is obtained.