The hex color #783A8F is a dark color. The web-safe version is Hex
#663399. A complementary color is
#87C570. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#AB6DC2, and Hex
#45075C is the 20% darker color. If the color is saturated by 10%, you get
#793593. If the color is desaturated by 10%, the color
#773F8B is obtained.