The hex color #6e374d is a dark color. The web-safe version is Hex
#663366. A complementary color is
#91C8B2. The grayscale version is
#515151. A 20% lighter version of the original color is
#A16A80, and Hex
#3B041A is the 20% darker color. If the color is saturated by 10%, you get
#71344D. If the color is desaturated by 10%, the color
#6B3A4D is obtained.