The hex color #b3202c is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#4CDFD3. The grayscale version is
#555555. A 20% lighter version of the original color is
#E6535F, and Hex
#800000 is the 20% darker color. If the color is saturated by 10%, you get
#BC1B28. If the color is desaturated by 10%, the color
#AA2530 is obtained.