The hex color #b83d3a is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#47C2C5. The grayscale version is
#656565. A 20% lighter version of the original color is
#EB706D, and Hex
#850A07 is the 20% darker color. If the color is saturated by 10%, you get
#C03936. If the color is desaturated by 10%, the color
#B0413E is obtained.