The hex color #74cfd4 is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#8B302B. The grayscale version is
#B2B2B2. A 20% lighter version of the original color is
#A7FFFF, and Hex
#419CA1 is the 20% darker color. If the color is saturated by 10%, you get
#6ED2D7. If the color is desaturated by 10%, the color
#7ACCD1 is obtained.