The hex color #8e100c is a dark color. The web-safe version is Hex
#990000. A complementary color is
#71EFF3. The grayscale version is
#393939. A 20% lighter version of the original color is
#C1433F, and Hex
#5B0000 is the 20% darker color. If the color is saturated by 10%, you get
#970C08. If the color is desaturated by 10%, the color
#851410 is obtained.