#042F55

#042F55

Color Values

HEX

#042F55

RGB

4, 47, 85

HSL

208.1, 91.0%, 17.5%

HSV

208.1, 95.3%, 33.3%

CMYK

95.3%, 44.7%, 0.0%, 66.7%

OKLCH

0.3007 0.0818 250.6

Properties

Cool Dark Nearest: RAL 5026 Pearl Night Blue

Color Harmonies

Complementary

#042F55

#552A04

Analogous

#045553

#040755

#042F55

Triadic

#042F55

#55042F

#2F5504

Split Complementary

#042F55

#550407

#555304

Tetradic

#042F55

#530455

#552A04

#075504

Color Blindness Simulation

Original

#042F55

Protanopia

#17174C

Deuteranopia

#14114A

Tritanopia

#064543

Achromatopsia

#292929

CSS Usage

background-color: #042F55;
color: #042F55;
border-color: #042F55;
Nearest Tailwind: Sky 950 #082F49

Tailwind Shades

50
#F1F8FD
100
#DFEEFB
200
#BBDDFC
300
#8AC5F9
400
#4BA6F7
500
#0B87F4
600
#096CC3
700
#07569C
800
#06437A
900
#093358
950
#062038

Contrast Checker

Text on white

13.61:1

AA Pass AAA Pass

Text on black

1.54:1

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