The hex color #40413e is a dark color. The web-safe version is Hex
#333333. A complementary color is
#BFBEC1. The grayscale version is
#404040. A 20% lighter version of the original color is
#737471, and Hex
#0D0E0B is the 20% darker color. If the color is saturated by 10%, you get
#40413E. If the color is desaturated by 10%, the color
#40413E is obtained.