The hex color #a13da4 is a dark color. The web-safe version is Hex
#993399. A complementary color is
#5EC25B. The grayscale version is
#818181. A 20% lighter version of the original color is
#D470D7, and Hex
#6E0A71 is the 20% darker color. If the color is saturated by 10%, you get
#A436A8. If the color is desaturated by 10%, the color
#9E44A0 is obtained.