The hex color #a72b2f is a dark color. The web-safe version is Hex
#993333. A complementary color is
#58D4D0. The grayscale version is
#565656. A 20% lighter version of the original color is
#DA5E62, and Hex
#740000 is the 20% darker color. If the color is saturated by 10%, you get
#AF272B. If the color is desaturated by 10%, the color
#9F2F33 is obtained.