The hex color #3a8fe2 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#C5701D. The grayscale version is
#8E8E8E. A 20% lighter version of the original color is
#6DC2FF, and Hex
#075CAF is the 20% darker color. If the color is saturated by 10%, you get
#328FEA. If the color is desaturated by 10%, the color
#428FDA is obtained.