The hex color #a558dc is a dark color. The web-safe version is Hex
#9966CC. A complementary color is
#5AA723. The grayscale version is
#9E9E9E. A 20% lighter version of the original color is
#D88BFF, and Hex
#7225A9 is the 20% darker color. If the color is saturated by 10%, you get
#A651E2. If the color is desaturated by 10%, the color
#A45FD6 is obtained.