#343D8D

#343D8D

Color Values

HEX

#343D8D

RGB

52, 61, 141

HSL

233.9, 46.1%, 37.8%

HSV

233.9, 63.1%, 55.3%

CMYK

63.1%, 56.7%, 0.0%, 44.7%

OKLCH

0.4 0.1316 274.0

Properties

Cool Dark Nearest: royalblue 4

Color Harmonies

Complementary

#343D8D

#8D8434

Analogous

#34698D

#57348D

#343D8D

Triadic

#343D8D

#8D343D

#3D8D34

Split Complementary

#343D8D

#8D5734

#698D34

Tetradic

#343D8D

#8D3469

#8D8434

#348D57

Color Blindness Simulation

Original

#343D8D

Protanopia

#38387A

Deuteranopia

#373775

Tritanopia

#346A67

Achromatopsia

#414141

CSS Usage

background-color: #343D8D;
color: #343D8D;
border-color: #343D8D;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FA
100
#E6E8F4
200
#CBCEEC
300
#A6ABDE
400
#757ECC
500
#4551BA
600
#374195
700
#2C3477
800
#22285D
900
#1C2045
950
#12142B

Contrast Checker

Text on white

9.55:1

AA Pass AAA Pass

Text on black

2.2:1

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