#042F6B

#042F6B

Color Values

HEX

#042F6B

RGB

4, 47, 107

HSL

215.0, 92.8%, 21.8%

HSV

215.0, 96.3%, 42.0%

CMYK

96.3%, 56.1%, 0.0%, 58.0%

OKLCH

0.3188 0.1141 258.5

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#042F6B

#6B4004

Analogous

#04636B

#0D046B

#042F6B

Triadic

#042F6B

#6B042F

#2F6B04

Split Complementary

#042F6B

#6B0D04

#636B04

Tetradic

#042F6B

#6B0463

#6B4004

#046B0D

Color Blindness Simulation

Original

#042F6B

Protanopia

#17175C

Deuteranopia

#141159

Tritanopia

#06514E

Achromatopsia

#2A2A2A

CSS Usage

background-color: #042F6B;
color: #042F6B;
border-color: #042F6B;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F1F6FD
100
#DFEBFB
200
#BAD6FC
300
#89B8FB
400
#4992F8
500
#096CF6
600
#0756C5
700
#06459D
800
#05367B
900
#082A59
950
#051A38

Contrast Checker

Text on white

12.93:1

AA Pass AAA Pass

Text on black

1.62:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026