The hex color #3d372d is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2C8D2. The grayscale version is
#363636. A 20% lighter version of the original color is
#706A60, and Hex
#0A0400 is the 20% darker color. If the color is saturated by 10%, you get
#3E372C. If the color is desaturated by 10%, the color
#3C372E is obtained.