The hex color #81730c is a dark color. The web-safe version is Hex
#996600. A complementary color is
#7E8CF3. The grayscale version is
#555555. A 20% lighter version of the original color is
#B4A63F, and Hex
#4E4000 is the 20% darker color. If the color is saturated by 10%, you get
#857605. If the color is desaturated by 10%, the color
#7D7013 is obtained.