The hex color #b33d0d is a dark color. The web-safe version is Hex
#CC3300. A complementary color is
#4CC2F2. The grayscale version is
#545454. A 20% lighter version of the original color is
#E67040, and Hex
#800A00 is the 20% darker color. If the color is saturated by 10%, you get
#BC3B06. If the color is desaturated by 10%, the color
#AA3F14 is obtained.