The hex color #74bbdb is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#8B4424. The grayscale version is
#AEAEAE. A 20% lighter version of the original color is
#A7EEFF, and Hex
#4188A8 is the 20% darker color. If the color is saturated by 10%, you get
#6EBCE0. If the color is desaturated by 10%, the color
#7ABAD7 is obtained.