The hex color #a370e4 is a light color. The web-safe version is Hex
#9966CC. A complementary color is
#5C8F1B. The grayscale version is
#A8A8A8. A 20% lighter version of the original color is
#D6A3FF, and Hex
#703DB1 is the 20% darker color. If the color is saturated by 10%, you get
#A36AEA. If the color is desaturated by 10%, the color
#A376DE is obtained.