The hex color #6dd1cb is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#922E34. The grayscale version is
#AEAEAE. A 20% lighter version of the original color is
#A0FFFE, and Hex
#3A9E98 is the 20% darker color. If the color is saturated by 10%, you get
#67D5CE. If the color is desaturated by 10%, the color
#73CDC8 is obtained.