The hex color #83111c is a dark color. The web-safe version is Hex
#990033. A complementary color is
#7CEEE3. The grayscale version is
#3B3B3B. A 20% lighter version of the original color is
#B6444F, and Hex
#500000 is the 20% darker color. If the color is saturated by 10%, you get
#8A0D19. If the color is desaturated by 10%, the color
#7C151F is obtained.