The hex color #11ffdd is a light color. The web-safe version is Hex
#00FFCC. A complementary color is
#EE0022. The grayscale version is
#A4A4A4. A 20% lighter version of the original color is
#44FFFF, and Hex
#00CCAA is the 20% darker color. If the color is saturated by 10%, you get
#02FFE3. If the color is desaturated by 10%, the color
#20F6D7 is obtained.