The hex color #1f82dd is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#E07D22. The grayscale version is
#7F7F7F. A 20% lighter version of the original color is
#52B5FF, and Hex
#004FAA is the 20% darker color. If the color is saturated by 10%, you get
#1582E6. If the color is desaturated by 10%, the color
#2982D4 is obtained.