The hex color #e5141c is a dark color. The web-safe version is Hex
#CC0033. A complementary color is
#1AEBE3. The grayscale version is
#5C5C5C. A 20% lighter version of the original color is
#FF474F, and Hex
#B20000 is the 20% darker color. If the color is saturated by 10%, you get
#F30D16. If the color is desaturated by 10%, the color
#D71B22 is obtained.