The hex color #a128f5 is a dark color. The web-safe version is Hex
#9933FF. A complementary color is
#5ED70A. The grayscale version is
#959595. A 20% lighter version of the original color is
#D45BFF, and Hex
#6E00C2 is the 20% darker color. If the color is saturated by 10%, you get
#A21DFF. If the color is desaturated by 10%, the color
#A033EB is obtained.