The hex color #3f133e is a dark color. The web-safe version is Hex
#330033. A complementary color is
#C0ECC1. The grayscale version is
#303030. A 20% lighter version of the original color is
#724671, and Hex
#0C000B is the 20% darker color. If the color is saturated by 10%, you get
#41103F. If the color is desaturated by 10%, the color
#3E163D is obtained.