The hex color #e4352e is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#1BCAD1. The grayscale version is
#6D6D6D. A 20% lighter version of the original color is
#FF6861, and Hex
#B10200 is the 20% darker color. If the color is saturated by 10%, you get
#F02F28. If the color is desaturated by 10%, the color
#D83B34 is obtained.