The hex color #4ffdd1 is a light color. The web-safe version is Hex
#66FFCC. A complementary color is
#B0022E. The grayscale version is
#B4B4B4. A 20% lighter version of the original color is
#82FFFF, and Hex
#1CCA9E is the 20% darker color. If the color is saturated by 10%, you get
#45FFD4. If the color is desaturated by 10%, the color
#59F6CE is obtained.