The hex color #3d3d1f is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2C2E0. The grayscale version is
#333333. A 20% lighter version of the original color is
#707052, and Hex
#0A0A00 is the 20% darker color. If the color is saturated by 10%, you get
#3E3E1D. If the color is desaturated by 10%, the color
#3C3C21 is obtained.