The hex color #a550ca is a dark color. The web-safe version is Hex
#9966CC. A complementary color is
#5AAF35. The grayscale version is
#959595. A 20% lighter version of the original color is
#D883FD, and Hex
#721D97 is the 20% darker color. If the color is saturated by 10%, you get
#A749CF. If the color is desaturated by 10%, the color
#A357C5 is obtained.