The hex color #b83a2d is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#47C5D2. The grayscale version is
#606060. A 20% lighter version of the original color is
#EB6D60, and Hex
#850700 is the 20% darker color. If the color is saturated by 10%, you get
#C13628. If the color is desaturated by 10%, the color
#AF3E32 is obtained.