The hex color #7d10c0 is a dark color. The web-safe version is Hex
#6600CC. A complementary color is
#82EF3F. The grayscale version is
#6F6F6F. A 20% lighter version of the original color is
#B043F3, and Hex
#4A008D is the 20% darker color. If the color is saturated by 10%, you get
#7E07C8. If the color is desaturated by 10%, the color
#7C1AB8 is obtained.