The hex color #6b99cf is a light color. The web-safe version is Hex
#6699CC. A complementary color is
#946630. The grayscale version is
#9C9C9C. A 20% lighter version of the original color is
#9ECCFF, and Hex
#38669C is the 20% darker color. If the color is saturated by 10%, you get
#6699D4. If the color is desaturated by 10%, the color
#7099CA is obtained.