The hex color #d646dd is a light color. The web-safe version is Hex
#CC33CC. A complementary color is
#29B922. The grayscale version is
#A8A8A8. A 20% lighter version of the original color is
#FF79FF, and Hex
#A313AA is the 20% darker color. If the color is saturated by 10%, you get
#DB3CE2. If the color is desaturated by 10%, the color
#D150D8 is obtained.