The hex color #3498cc is a light color. The web-safe version is Hex
#3399CC. A complementary color is
#CB6733. The grayscale version is
#888888. A 20% lighter version of the original color is
#67CBFF, and Hex
#016599 is the 20% darker color. If the color is saturated by 10%, you get
#2C9AD3. If the color is desaturated by 10%, the color
#3C96C5 is obtained.