The hex color #74f9f4 is a light color. The web-safe version is Hex
#66FFFF. A complementary color is
#8B060B. The grayscale version is
#CBCBCB. A 20% lighter version of the original color is
#A7FFFF, and Hex
#41C6C1 is the 20% darker color. If the color is saturated by 10%, you get
#6BFEF8. If the color is desaturated by 10%, the color
#7DF4F0 is obtained.