The hex color #b4c4d6 is a light color. The web-safe version is Hex
#CCCCCC. A complementary color is
#4B3B29. The grayscale version is
#C5C5C5. A 20% lighter version of the original color is
#E7F7FF, and Hex
#8191A3 is the 20% darker color. If the color is saturated by 10%, you get
#B2C4D8. If the color is desaturated by 10%, the color
#B6C4D4 is obtained.