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 #040A18 is the color #181204

The HSL model was used to determine the complementary color

Input Color


HEX #040A18
RGB 4, 10, 24
CMYK 83%, 58%, 0%, 91%
HSL 222°, 71.43%, 5.49%

Complementary Color


HEX #181204
RGB 24, 18, 4
CMYK 0%, 25%, 83%, 91%
HSL 42°, 71.43%, 5.49%

Complementary color scheme

#181204
#0A1804
#041812
#040A18
#120418