The hex color #55cedc is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#AA3123. The grayscale version is
#AAAAAA. A 20% lighter version of the original color is
#88FFFF, and Hex
#229BA9 is the 20% darker color. If the color is saturated by 10%, you get
#4CD2E1. If the color is desaturated by 10%, the color
#5ECAD7 is obtained.