The hex color #a75ef1 is a light color. The web-safe version is Hex
#9966FF. A complementary color is
#58A10E. The grayscale version is
#A7A7A7. A 20% lighter version of the original color is
#DA91FF, and Hex
#742BBE is the 20% darker color. If the color is saturated by 10%, you get
#A757F8. If the color is desaturated by 10%, the color
#A765EA is obtained.