#646872

#646872

Color Values

HEX

#646872

RGB

100, 104, 114

HSL

222.9, 6.5%, 42.0%

HSV

222.9, 12.3%, 44.7%

CMYK

12.3%, 8.8%, 0.0%, 55.3%

OKLCH

0.5173 0.0165 268.4

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#646872

#726E64

Analogous

#646F72

#676472

#646872

Triadic

#646872

#726468

#687264

Split Complementary

#646872

#726764

#6F7264

Tetradic

#646872

#72646F

#726E64

#647267

Color Blindness Simulation

Original

#646872

Protanopia

#666670

Deuteranopia

#66656F

Tritanopia

#646E6D

Achromatopsia

#686868

CSS Usage

background-color: #646872;
color: #646872;
border-color: #646872;
Nearest Tailwind: Zinc 500 #71717A

Tailwind Shades

50
#F7F7F8
100
#ECEDEE
200
#D9DADE
300
#BEC0C6
400
#9B9EA7
500
#777C88
600
#5F636D
700
#4C4F57
800
#3C3E44
900
#2E2F33
950
#1D1E20

Contrast Checker

Text on white

5.58:1

AA Pass AAA Fail

Text on black

3.76:1

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