The hex color #b03e0c is a dark color. The web-safe version is Hex
#993300. A complementary color is
#4FC1F3. The grayscale version is
#535353. A 20% lighter version of the original color is
#E3713F, and Hex
#7D0B00 is the 20% darker color. If the color is saturated by 10%, you get
#B93C05. If the color is desaturated by 10%, the color
#A74013 is obtained.