The hex color #a66b3e is a dark color. The web-safe version is Hex
#996633. A complementary color is
#5994C1. The grayscale version is
#707070. A 20% lighter version of the original color is
#D99E71, and Hex
#73380B is the 20% darker color. If the color is saturated by 10%, you get
#AB6B39. If the color is desaturated by 10%, the color
#A16B43 is obtained.