#313F51

#313F51

Color Values

HEX

#313F51

RGB

49, 63, 81

HSL

213.8, 24.6%, 25.5%

HSV

213.8, 39.5%, 31.8%

CMYK

39.5%, 22.2%, 0.0%, 68.2%

OKLCH

0.3631 0.0363 254.9

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#313F51

#514331

Analogous

#314F51

#333151

#313F51

Triadic

#313F51

#51313F

#3F5131

Split Complementary

#313F51

#513331

#4F5131

Tetradic

#313F51

#51314F

#514331

#315133

Color Blindness Simulation

Original

#313F51

Protanopia

#37374D

Deuteranopia

#36354C

Tritanopia

#324948

Achromatopsia

#3D3D3D

CSS Usage

background-color: #313F51;
color: #313F51;
border-color: #313F51;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F6F7F9
100
#E9EDF1
200
#D3DAE4
300
#B3C0D1
400
#899EB8
500
#607C9F
600
#4D637F
700
#3E4F66
800
#303E4F
900
#262F3B
950
#181E25

Contrast Checker

Text on white

10.71:1

AA Pass AAA Pass

Text on black

1.96:1

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