#64636B

#64636B

Color Values

HEX

#64636B

RGB

100, 99, 107

HSL

247.5, 3.9%, 40.4%

HSV

247.5, 7.5%, 42.0%

CMYK

6.5%, 7.5%, 0.0%, 58.0%

OKLCH

0.5034 0.0126 291.7

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#64636B

#6A6B63

Analogous

#63666B

#68636B

#64636B

Triadic

#64636B

#6B6463

#636B64

Split Complementary

#64636B

#6B6863

#666B63

Tetradic

#64636B

#6B6366

#6A6B63

#636B68

Color Blindness Simulation

Original

#64636B

Protanopia

#646469

Deuteranopia

#646469

Tritanopia

#646867

Achromatopsia

#646464

CSS Usage

background-color: #64636B;
color: #64636B;
border-color: #64636B;
Nearest Tailwind: Zinc 500 #71717A

Tailwind Shades

50
#F7F7F8
100
#EDEDEE
200
#DADADD
300
#C0BFC4
400
#9E9DA4
500
#7C7B84
600
#63626A
700
#4F4E55
800
#3E3D42
900
#2F2F32
950
#1E1E20

Contrast Checker

Text on white

5.93:1

AA Pass AAA Fail

Text on black

3.54:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026