The hex color #726ccc is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#8D9333. The grayscale version is
#8E8E8E. A 20% lighter version of the original color is
#A59FFF, and Hex
#3F3999 is the 20% darker color. If the color is saturated by 10%, you get
#6F69D2. If the color is desaturated by 10%, the color
#756FC6 is obtained.