The hex color #7c31cc is a dark color. The web-safe version is Hex
#6633CC. A complementary color is
#83CE33. The grayscale version is
#7E7E7E. A 20% lighter version of the original color is
#AF64FF, and Hex
#490099 is the 20% darker color. If the color is saturated by 10%, you get
#7C29D4. If the color is desaturated by 10%, the color
#7C39C4 is obtained.