The hex color #8708e4 is a dark color. The web-safe version is Hex
#9900CC. A complementary color is
#78F71B. The grayscale version is
#7C7C7C. A 20% lighter version of the original color is
#BA3BFF, and Hex
#5400B1 is the 20% darker color. If the color is saturated by 10%, you get
#8800EE. If the color is desaturated by 10%, the color
#8614DA is obtained.