The hex color #3a70a1 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#C58F5E. The grayscale version is
#6E6E6E. A 20% lighter version of the original color is
#6DA3D4, and Hex
#073D6E is the 20% darker color. If the color is saturated by 10%, you get
#3570A6. If the color is desaturated by 10%, the color
#3F709C is obtained.