The hex color #429cc9 is a light color. The web-safe version is Hex
#3399CC. A complementary color is
#BD6336. The grayscale version is
#8D8D8D. A 20% lighter version of the original color is
#75CFFC, and Hex
#0F6996 is the 20% darker color. If the color is saturated by 10%, you get
#3B9ECF. If the color is desaturated by 10%, the color
#4A9BC3 is obtained.