The hex color #a74dd2 is a dark color. The web-safe version is Hex
#9966CC. A complementary color is
#58B22D. The grayscale version is
#979797. A 20% lighter version of the original color is
#DA80FF, and Hex
#741A9F is the 20% darker color. If the color is saturated by 10%, you get
#A946D8. If the color is desaturated by 10%, the color
#A554CC is obtained.