The hex color #cf91e0 is a light color. The web-safe version is Hex
#CC99CC. A complementary color is
#306E1F. The grayscale version is
#C0C0C0. A 20% lighter version of the original color is
#FFC4FF, and Hex
#9C5EAD is the 20% darker color. If the color is saturated by 10%, you get
#D18CE3. If the color is desaturated by 10%, the color
#CE96DD is obtained.