#1B3389

#1B3389

Color Values

HEX

#1B3389

RGB

27, 51, 137

HSL

226.9, 67.1%, 32.2%

HSV

226.9, 80.3%, 53.7%

CMYK

80.3%, 62.8%, 0.0%, 46.3%

OKLCH

0.3624 0.1462 266.7

Properties

Cool Dark Nearest: royalblue 4

Color Harmonies

Complementary

#1B3389

#89711B

Analogous

#1B6A89

#3A1B89

#1B3389

Triadic

#1B3389

#891B33

#33891B

Split Complementary

#1B3389

#893A1B

#6A891B

Tetradic

#1B3389

#891B6A

#89711B

#1B893A

Color Blindness Simulation

Original

#1B3389

Protanopia

#252674

Deuteranopia

#24226F

Tritanopia

#1C6460

Achromatopsia

#343434

CSS Usage

background-color: #1B3389;
color: #1B3389;
border-color: #1B3389;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F3F5FC
100
#E3E7F7
200
#C3CEF3
300
#99ABEB
400
#617DE0
500
#2A4FD5
600
#223FAA
700
#1B3388
800
#15286B
900
#13204E
950
#0C1431

Contrast Checker

Text on white

11.16:1

AA Pass AAA Pass

Text on black

1.88:1

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