The hex color #a663c8 is a light color. The web-safe version is Hex
#9966CC. A complementary color is
#599C37. The grayscale version is
#9B9B9B. A 20% lighter version of the original color is
#D996FB, and Hex
#733095 is the 20% darker color. If the color is saturated by 10%, you get
#A75DCD. If the color is desaturated by 10%, the color
#A569C4 is obtained.