The hex color #8f90ea is a light color. The web-safe version is Hex
#9999FF. A complementary color is
#706F15. The grayscale version is
#AEAEAE. A 20% lighter version of the original color is
#C2C3FF, and Hex
#5C5DB7 is the 20% darker color. If the color is saturated by 10%, you get
#8C8DF0. If the color is desaturated by 10%, the color
#9293E4 is obtained.