The hex color #3d8fc7 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#C27038. The grayscale version is
#868686. A 20% lighter version of the original color is
#70C2FA, and Hex
#0A5C94 is the 20% darker color. If the color is saturated by 10%, you get
#3690CD. If the color is desaturated by 10%, the color
#448EC1 is obtained.