The hex color #3d6af9 is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#C29506. The grayscale version is
#8B8B8B. A 20% lighter version of the original color is
#709DFF, and Hex
#0A37C6 is the 20% darker color. If the color is saturated by 10%, you get
#3567FF. If the color is desaturated by 10%, the color
#456DEE is obtained.