The hex color #a73b3e is a dark color. The web-safe version is Hex
#993333. A complementary color is
#58C4C1. The grayscale version is
#606060. A 20% lighter version of the original color is
#DA6E71, and Hex
#74080B is the 20% darker color. If the color is saturated by 10%, you get
#AE373B. If the color is desaturated by 10%, the color
#A03F41 is obtained.