The hex color #3D3E3E is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2C1C1. The grayscale version is
#3E3E3E. A 20% lighter version of the original color is
#707171, and Hex
#0A0B0B is the 20% darker color. If the color is saturated by 10%, you get
#3D3E3E. If the color is desaturated by 10%, the color
#3D3E3E is obtained.