The hex color #7D37B5 is a dark color. The web-safe version is Hex
#6633CC. A complementary color is
#82C84A. The grayscale version is
#787878. A 20% lighter version of the original color is
#B06AE8, and Hex
#4A0482 is the 20% darker color. If the color is saturated by 10%, you get
#7D30BB. If the color is desaturated by 10%, the color
#7D3EAF is obtained.