The hex color #e01a3e is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#1FE5C1. The grayscale version is
#686868. A 20% lighter version of the original color is
#FF4D71, and Hex
#AD000B is the 20% darker color. If the color is saturated by 10%, you get
#EC123A. If the color is desaturated by 10%, the color
#D42242 is obtained.