The hex color #4c0066 is a dark color. The web-safe version is Hex
#330066. A complementary color is
#B3FF99. The grayscale version is
#3B3B3B. A 20% lighter version of the original color is
#7F3399, and Hex
#190033 is the 20% darker color. If the color is saturated by 10%, you get
#4E006A. If the color is desaturated by 10%, the color
#4A0662 is obtained.