The hex color #510b3c is a dark color. The web-safe version is Hex
#660033. A complementary color is
#AEF4C3. The grayscale version is
#333333. A 20% lighter version of the original color is
#843E6F, and Hex
#1E0009 is the 20% darker color. If the color is saturated by 10%, you get
#54073D. If the color is desaturated by 10%, the color
#4E0F3B is obtained.