The hex color #540f3c is a dark color. The web-safe version is Hex
#660033. A complementary color is
#ABF0C3. The grayscale version is
#353535. A 20% lighter version of the original color is
#87426F, and Hex
#210009 is the 20% darker color. If the color is saturated by 10%, you get
#570B3D. If the color is desaturated by 10%, the color
#51133B is obtained.