#04539D

#04539D

Color Values

HEX

#04539D

RGB

4, 83, 157

HSL

209.0, 95.0%, 31.6%

HSV

209.0, 97.5%, 61.6%

CMYK

97.5%, 47.1%, 0.0%, 38.4%

OKLCH

0.4443 0.1379 253.8

Properties

Cool Dark Nearest: NCS S 2065-B Pure Blue

Color Harmonies

Complementary

#04539D

#9D4E04

Analogous

#049D9B

#04079D

#04539D

Triadic

#04539D

#9D0453

#539D04

Split Complementary

#04539D

#9D0407

#9D9B04

Tetradic

#04539D

#9B049D

#9D4E04

#079D04

Color Blindness Simulation

Original

#04539D

Protanopia

#26278B

Deuteranopia

#221C87

Tritanopia

#087D7A

Achromatopsia

#484848

CSS Usage

background-color: #04539D;
color: #04539D;
border-color: #04539D;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F1F8FE
100
#DFEEFC
200
#B9DCFD
300
#88C4FC
400
#47A4FA
500
#0684F9
600
#0569C7
700
#04549F
800
#03427C
900
#07325A
950
#041F39

Contrast Checker

Text on white

7.69:1

AA Pass AAA Pass

Text on black

2.73:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026