How to determine complementary colors?
What are the different color models?

Determine Complementary Color

140 color names
216 web safe colors
2040 RAL colors
200 shades of gray

The complementary color of #1B5981 is the color #81421B

The HSL model was used to determine the complementary color

Input Color


HEX #1B5981
RGB 27, 89, 129
CMYK 79%, 31%, 0%, 49%
HSL 203.53°, 65.38%, 30.59%

Complementary Color


HEX #81421B
RGB 129, 66, 27
CMYK 0%, 49%, 79%, 49%
HSL 22.94°, 65.38%, 30.59%

Complementary color scheme

#81421B
#5A811B
#1B8142
#1B5A81
#421B81