The hex color #a378dd is a light color. The web-safe version is Hex
#9966CC. A complementary color is
#5C8722. The grayscale version is
#A8A8A8. A 20% lighter version of the original color is
#D6ABFF, and Hex
#7045AA is the 20% darker color. If the color is saturated by 10%, you get
#A373E2. If the color is desaturated by 10%, the color
#A47DD8 is obtained.