The hex color #8b3b1c is a dark color. The web-safe version is Hex
#993333. A complementary color is
#74C4E3. The grayscale version is
#4B4B4B. A 20% lighter version of the original color is
#BE6E4F, and Hex
#580800 is the 20% darker color. If the color is saturated by 10%, you get
#913917. If the color is desaturated by 10%, the color
#853D21 is obtained.