The hex color #3f1a2f is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C0E5D0. The grayscale version is
#2D2D2D. A 20% lighter version of the original color is
#724D62, and Hex
#0C0000 is the 20% darker color. If the color is saturated by 10%, you get
#41182F. If the color is desaturated by 10%, the color
#3D1C2F is obtained.