The hex color #b70b10 is a dark color. The web-safe version is Hex
#CC0000. A complementary color is
#48F4EF. The grayscale version is
#464646. A 20% lighter version of the original color is
#EA3E43, and Hex
#840000 is the 20% darker color. If the color is saturated by 10%, you get
#C2050B. If the color is desaturated by 10%, the color
#AC1115 is obtained.