The hex color #840f83 is a dark color. The web-safe version is Hex
#990099. A complementary color is
#7BF07C. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#B742B6, and Hex
#510050 is the 20% darker color. If the color is saturated by 10%, you get
#880787. If the color is desaturated by 10%, the color
#80177F is obtained.