The hex color #a30b3f is a dark color. The web-safe version is Hex
#990033. A complementary color is
#5CF4C0. The grayscale version is
#4F4F4F. A 20% lighter version of the original color is
#D63E72, and Hex
#70000C is the 20% darker color. If the color is saturated by 10%, you get
#AB043D. If the color is desaturated by 10%, the color
#9B1241 is obtained.