The hex color #1f87d2 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#E0782D. The grayscale version is
#7D7D7D. A 20% lighter version of the original color is
#52BAFF, and Hex
#00549F is the 20% darker color. If the color is saturated by 10%, you get
#1688DA. If the color is desaturated by 10%, the color
#2886CA is obtained.