The hex color #42c7fe is a light color. The web-safe version is Hex
#33CCFF. A complementary color is
#BD3801. The grayscale version is
#ADADAD. A 20% lighter version of the original color is
#75FAFF, and Hex
#0F94CB is the 20% darker color. If the color is saturated by 10%, you get
#37CAFF. If the color is desaturated by 10%, the color
#4DC4F6 is obtained.