The hex color #3C6A8F is a dark color. The web-safe version is Hex
#336699. A complementary color is
#C39570. The grayscale version is
#676767. A 20% lighter version of the original color is
#6F9DC2, and Hex
#09375C is the 20% darker color. If the color is saturated by 10%, you get
#386A93. If the color is desaturated by 10%, the color
#406A8B is obtained.