The hex color #4DCDD9 is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#B23226. The grayscale version is
#A6A6A6. A 20% lighter version of the original color is
#80FFFF, and Hex
#1A9AA6 is the 20% darker color. If the color is saturated by 10%, you get
#44D1DE. If the color is desaturated by 10%, the color
#56C9D4 is obtained.