The hex color #8f90c8 is a light color. The web-safe version is Hex
#9999CC. A complementary color is
#706F37. The grayscale version is
#A2A2A2. A 20% lighter version of the original color is
#C2C3FB, and Hex
#5C5D95 is the 20% darker color. If the color is saturated by 10%, you get
#8D8ECC. If the color is desaturated by 10%, the color
#9192C4 is obtained.