#1B4583

#1B4583

Color Values

HEX

#1B4583

RGB

27, 69, 131

HSL

215.8, 65.8%, 31.0%

HSV

215.8, 79.4%, 51.4%

CMYK

79.4%, 47.3%, 0.0%, 48.6%

OKLCH

0.397 0.1143 258.4

Properties

Cool Dark Nearest: dodgerblue 4

Color Harmonies

Complementary

#1B4583

#83591B

Analogous

#1B7983

#251B83

#1B4583

Triadic

#1B4583

#831B45

#45831B

Split Complementary

#1B4583

#83251B

#79831B

Tetradic

#1B4583

#831B79

#83591B

#1B8325

Color Blindness Simulation

Original

#1B4583

Protanopia

#2D2E74

Deuteranopia

#2B2870

Tritanopia

#1D6866

Achromatopsia

#414141

CSS Usage

background-color: #1B4583;
color: #1B4583;
border-color: #1B4583;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F3F7FC
100
#E3EBF7
200
#C4D7F3
300
#9ABAEA
400
#6395DF
500
#2C6FD3
600
#2359A9
700
#1C4787
800
#16386A
900
#142B4D
950
#0C1B31

Contrast Checker

Text on white

9.44:1

AA Pass AAA Pass

Text on black

2.23:1

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