The hex color #b83c10 is a dark color. The web-safe version is Hex
#CC3300. A complementary color is
#47C3EF. The grayscale version is
#575757. A 20% lighter version of the original color is
#EB6F43, and Hex
#850900 is the 20% darker color. If the color is saturated by 10%, you get
#C23909. If the color is desaturated by 10%, the color
#AE3F17 is obtained.