The hex color #e43d09 is a dark color. The web-safe version is Hex
#CC3300. A complementary color is
#1BC2F6. The grayscale version is
#636363. A 20% lighter version of the original color is
#FF703C, and Hex
#B10A00 is the 20% darker color. If the color is saturated by 10%, you get
#F13900. If the color is desaturated by 10%, the color
#D74112 is obtained.