The hex color #427aa3 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#BD855C. The grayscale version is
#757575. A 20% lighter version of the original color is
#75ADD6, and Hex
#0F4770 is the 20% darker color. If the color is saturated by 10%, you get
#3D7BA8. If the color is desaturated by 10%, the color
#477A9E is obtained.