The hex color #7c38a7 is a dark color. The web-safe version is Hex
#663399. A complementary color is
#83C758. The grayscale version is
#747474. A 20% lighter version of the original color is
#AF6BDA, and Hex
#490574 is the 20% darker color. If the color is saturated by 10%, you get
#7D32AC. If the color is desaturated by 10%, the color
#7B3EA2 is obtained.