The hex color #3e374e is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C1C8B1. The grayscale version is
#414141. A 20% lighter version of the original color is
#716A81, and Hex
#0B041B is the 20% darker color. If the color is saturated by 10%, you get
#3E364F. If the color is desaturated by 10%, the color
#3E384D is obtained.