The hex color #a53d09 is a dark color. The web-safe version is Hex
#993300. A complementary color is
#5AC2F6. The grayscale version is
#4E4E4E. A 20% lighter version of the original color is
#D8703C, and Hex
#720A00 is the 20% darker color. If the color is saturated by 10%, you get
#AE3B02. If the color is desaturated by 10%, the color
#9C3F10 is obtained.