The hex color #a66d51 is a dark color. The web-safe version is Hex
#996666. A complementary color is
#5992AE. The grayscale version is
#777777. A 20% lighter version of the original color is
#D9A084, and Hex
#733A1E is the 20% darker color. If the color is saturated by 10%, you get
#AB6C4D. If the color is desaturated by 10%, the color
#A16E55 is obtained.