#31403F

#31403F

Color Values

HEX

#31403F

RGB

49, 64, 63

HSL

176.0, 13.3%, 22.2%

HSV

176.0, 23.4%, 25.1%

CMYK

23.4%, 0.0%, 1.6%, 74.9%

OKLCH

0.358 0.0195 191.3

Properties

Cool Dark Nearest: RAL 6012 Black Green

Color Harmonies

Complementary

#31403F

#403132

Analogous

#314038

#313A40

#31403F

Triadic

#31403F

#3F3140

#403F31

Split Complementary

#31403F

#40313A

#403831

Tetradic

#31403F

#383140

#403132

#3A4031

Color Blindness Simulation

Original

#31403F

Protanopia

#37383F

Deuteranopia

#37363F

Tritanopia

#323F3F

Achromatopsia

#3D3D3D

CSS Usage

background-color: #31403F;
color: #31403F;
border-color: #31403F;
Nearest Tailwind: Neutral 700 #404040

Tailwind Shades

50
#F6F8F8
100
#EBEFEF
200
#D7E0DF
300
#BACAC9
400
#94ADAC
500
#6F908E
600
#587472
700
#475C5B
800
#374847
900
#2B3635
950
#1B2222

Contrast Checker

Text on white

10.85:1

AA Pass AAA Pass

Text on black

1.94:1

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