The hex color #8c74b4 is a light color. The web-safe version is Hex
#9966CC. A complementary color is
#738B4B. The grayscale version is
#919191. A 20% lighter version of the original color is
#BFA7E7, and Hex
#594181 is the 20% darker color. If the color is saturated by 10%, you get
#8B71B7. If the color is desaturated by 10%, the color
#8D77B1 is obtained.