The hex color #6bccb5 is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#94334A. The grayscale version is
#A4A4A4. A 20% lighter version of the original color is
#9EFFE8, and Hex
#389982 is the 20% darker color. If the color is saturated by 10%, you get
#65D0B7. If the color is desaturated by 10%, the color
#71C8B3 is obtained.