#181B42

#181B42

Color Values

HEX

#181B42

RGB

24, 27, 66

HSL

235.7, 46.7%, 17.6%

HSV

235.7, 63.6%, 25.9%

CMYK

63.6%, 59.1%, 0.0%, 74.1%

OKLCH

0.2442 0.0727 276.3

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#181B42

#423F18

Analogous

#183042

#2A1842

#181B42

Triadic

#181B42

#42181B

#1B4218

Split Complementary

#181B42

#422A18

#304218

Tetradic

#181B42

#421830

#423F18

#18422A

Color Blindness Simulation

Original

#181B42

Protanopia

#191939

Deuteranopia

#191936

Tritanopia

#18312F

Achromatopsia

#1D1D1D

CSS Usage

background-color: #181B42;
color: #181B42;
border-color: #181B42;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F5FA
100
#E6E7F4
200
#CBCDEC
300
#A5A9DE
400
#757BCD
500
#444CBB
600
#363D96
700
#2B3178
800
#22265E
900
#1C1F45
950
#12142B

Contrast Checker

Text on white

16.48:1

AA Pass AAA Pass

Text on black

1.27:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026