The hex color #770f8f is a dark color. The web-safe version is Hex
#660099. A complementary color is
#88F070. The grayscale version is
#5C5C5C. A 20% lighter version of the original color is
#AA42C2, and Hex
#44005C is the 20% darker color. If the color is saturated by 10%, you get
#7A0794. If the color is desaturated by 10%, the color
#74178A is obtained.