The hex color #12e5dd is a light color. The web-safe version is Hex
#00CCCC. A complementary color is
#ED1A22. The grayscale version is
#9C9C9C. A 20% lighter version of the original color is
#45FFFF, and Hex
#00B2AA is the 20% darker color. If the color is saturated by 10%, you get
#04ECE4. If the color is desaturated by 10%, the color
#20DED7 is obtained.