The hex color #e51a71 is a dark color. The web-safe version is Hex
#CC3366. A complementary color is
#1AE58E. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#FF4DA4, and Hex
#B2003E is the 20% darker color. If the color is saturated by 10%, you get
#F01070. If the color is desaturated by 10%, the color
#DA2472 is obtained.