The hex color #3f3c3e is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C0C3C1. The grayscale version is
#3E3E3E. A 20% lighter version of the original color is
#726F71, and Hex
#0C090B is the 20% darker color. If the color is saturated by 10%, you get
#3F3C3E. If the color is desaturated by 10%, the color
#3F3C3E is obtained.