The hex color #a72d2a is a dark color. The web-safe version is Hex
#993333. A complementary color is
#58D2D5. The grayscale version is
#555555. A 20% lighter version of the original color is
#DA605D, and Hex
#740000 is the 20% darker color. If the color is saturated by 10%, you get
#AF2926. If the color is desaturated by 10%, the color
#9F312E is obtained.