#343B51

#343B51

Color Values

HEX

#343B51

RGB

52, 59, 81

HSL

225.5, 21.8%, 26.1%

HSV

225.5, 35.8%, 31.8%

CMYK

35.8%, 27.2%, 0.0%, 68.2%

OKLCH

0.3555 0.0395 270.7

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#343B51

#514A34

Analogous

#344A51

#3C3451

#343B51

Triadic

#343B51

#51343B

#3B5134

Split Complementary

#343B51

#513C34

#4A5134

Tetradic

#343B51

#51344A

#514A34

#34513C

Color Blindness Simulation

Original

#343B51

Protanopia

#37374C

Deuteranopia

#37364A

Tritanopia

#344747

Achromatopsia

#3B3B3B

CSS Usage

background-color: #343B51;
color: #343B51;
border-color: #343B51;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F6F7F9
100
#EAEBF0
200
#D4D7E3
300
#B4BBCF
400
#8C96B5
500
#64719B
600
#505B7C
700
#404863
800
#32394E
900
#272C3A
950
#191B25

Contrast Checker

Text on white

11.11:1

AA Pass AAA Pass

Text on black

1.89:1

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