The hex color #6bc7dd is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#943822. The grayscale version is
#B0B0B0. A 20% lighter version of the original color is
#9EFAFF, and Hex
#3894AA is the 20% darker color. If the color is saturated by 10%, you get
#64C9E2. If the color is desaturated by 10%, the color
#72C5D8 is obtained.