The hex color #3d6fb4 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#C2904B. The grayscale version is
#757575. A 20% lighter version of the original color is
#70A2E7, and Hex
#0A3C81 is the 20% darker color. If the color is saturated by 10%, you get
#376EBA. If the color is desaturated by 10%, the color
#4370AE is obtained.