The hex color #e4343c is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#1BCBC3. The grayscale version is
#717171. A 20% lighter version of the original color is
#FF676F, and Hex
#B10109 is the 20% darker color. If the color is saturated by 10%, you get
#EF2E37. If the color is desaturated by 10%, the color
#D93A41 is obtained.