The hex color #3d6baf is a dark color. The web-safe version is Hex
#336699. A complementary color is
#C29450. The grayscale version is
#727272. A 20% lighter version of the original color is
#709EE2, and Hex
#0A387C is the 20% darker color. If the color is saturated by 10%, you get
#386AB5. If the color is desaturated by 10%, the color
#426CA9 is obtained.