The hex color #74d2dd is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#8B2D22. The grayscale version is
#B6B6B6. A 20% lighter version of the original color is
#A7FFFF, and Hex
#419FAA is the 20% darker color. If the color is saturated by 10%, you get
#6DD5E1. If the color is desaturated by 10%, the color
#7BCFD9 is obtained.