The hex color #733f1c is a dark color. The web-safe version is Hex
#663333. A complementary color is
#8CC0E3. The grayscale version is
#454545. A 20% lighter version of the original color is
#A6724F, and Hex
#400C00 is the 20% darker color. If the color is saturated by 10%, you get
#783E18. If the color is desaturated by 10%, the color
#6E4020 is obtained.