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 #2121B9 is the color #B9B921

The HSL model was used to determine the complementary color

Input Color

HEX #2121B9
RGB 33, 33, 185
CMYK 82%, 82%, 0%, 27%
HSL 240°, 69.72%, 42.75%

Complementary Color

HEX #B9B921
RGB 185, 185, 33
CMYK 0%, 0%, 82%, 27%
HSL 60°, 69.72%, 42.75%

Complementary color scheme

#B9B921

#21B921

#21B9B9

#2121B9

#B921B9