#313C40

#313C40

Color Values

HEX

#313C40

RGB

49, 60, 64

HSL

196.0, 13.3%, 22.2%

HSV

196.0, 23.4%, 25.1%

CMYK

23.4%, 6.2%, 0.0%, 74.9%

OKLCH

0.3478 0.0162 221.8

Properties

Cool Dark Nearest: RAL 6012 Black Green

Color Harmonies

Complementary

#313C40

#403531

Analogous

#31403D

#313540

#313C40

Triadic

#313C40

#40313C

#3C4031

Split Complementary

#313C40

#403135

#403D31

Tetradic

#313C40

#3D3140

#403531

#354031

Color Blindness Simulation

Original

#313C40

Protanopia

#36363F

Deuteranopia

#35343F

Tritanopia

#323E3E

Achromatopsia

#3A3A3A

CSS Usage

background-color: #313C40;
color: #313C40;
border-color: #313C40;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F6F8F8
100
#EBEEEF
200
#D7DEE0
300
#BAC6CA
400
#94A7AD
500
#6F8790
600
#586C74
700
#47575C
800
#374448
900
#2B3336
950
#1B2022

Contrast Checker

Text on white

11.35:1

AA Pass AAA Pass

Text on black

1.85:1

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