The hex color #3E83AB is a dark color. The web-safe version is Hex
#339999. A complementary color is
#C17C54. The grayscale version is
#797979. A 20% lighter version of the original color is
#71B6DE, and Hex
#0B5078 is the 20% darker color. If the color is saturated by 10%, you get
#3884B0. If the color is desaturated by 10%, the color
#4482A6 is obtained.