The hex color #42828e is a dark color. The web-safe version is Hex
#339999. A complementary color is
#BD7D71. The grayscale version is
#717171. A 20% lighter version of the original color is
#75B5C1, and Hex
#0F4F5B is the 20% darker color. If the color is saturated by 10%, you get
#3D8491. If the color is desaturated by 10%, the color
#47808B is obtained.