The hex color #3a7ca8 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#C58357. The grayscale version is
#757575. A 20% lighter version of the original color is
#6DAFDB, and Hex
#074975 is the 20% darker color. If the color is saturated by 10%, you get
#347DAD. If the color is desaturated by 10%, the color
#407BA3 is obtained.