The hex color #6b371c is a dark color. The web-safe version is Hex
#663333. A complementary color is
#94C8E3. The grayscale version is
#3F3F3F. A 20% lighter version of the original color is
#9E6A4F, and Hex
#380400 is the 20% darker color. If the color is saturated by 10%, you get
#6F3618. If the color is desaturated by 10%, the color
#673820 is obtained.