The hex color #a7451d is a dark color. The web-safe version is Hex
#993333. A complementary color is
#58BAE2. The grayscale version is
#585858. A 20% lighter version of the original color is
#DA7850, and Hex
#741200 is the 20% darker color. If the color is saturated by 10%, you get
#AF4317. If the color is desaturated by 10%, the color
#9F4723 is obtained.