The hex color #1bb5ef is a light color. The web-safe version is Hex
#33CCFF. A complementary color is
#E44A10. The grayscale version is
#959595. A 20% lighter version of the original color is
#4EE8FF, and Hex
#0082BC is the 20% darker color. If the color is saturated by 10%, you get
#0FB8F8. If the color is desaturated by 10%, the color
#27B2E6 is obtained.