The hex color #a123cc is a dark color. The web-safe version is Hex
#9933CC. A complementary color is
#5EDC33. The grayscale version is
#858585. A 20% lighter version of the original color is
#D456FF, and Hex
#6E0099 is the 20% darker color. If the color is saturated by 10%, you get
#A419D3. If the color is desaturated by 10%, the color
#9E2DC5 is obtained.