The hex color #8b81dd is a light color. The web-safe version is Hex
#9999CC. A complementary color is
#747E22. The grayscale version is
#A3A3A3. A 20% lighter version of the original color is
#BEB4FF, and Hex
#584EAA is the 20% darker color. If the color is saturated by 10%, you get
#897EE3. If the color is desaturated by 10%, the color
#8D84D7 is obtained.