#646F5B

#646F5B

Color Values

HEX

#646F5B

RGB

100, 111, 91

HSL

93.0, 9.9%, 39.6%

HSV

93.0, 18.0%, 43.5%

CMYK

9.9%, 0.0%, 18.0%, 56.5%

OKLCH

0.5264 0.0333 131.1

Properties

Cool Dark Nearest: RAL 7003 Moss Grey

Color Harmonies

Complementary

#646F5B

#665B6F

Analogous

#6E6F5B

#5B6F5C

#646F5B

Triadic

#646F5B

#5B646F

#6F5B64

Split Complementary

#646F5B

#5C5B6F

#6F5B6E

Tetradic

#646F5B

#5B6E6F

#665B6F

#6F5C5B

Color Blindness Simulation

Original

#646F5B

Protanopia

#696960

Deuteranopia

#686761

Tritanopia

#656464

Achromatopsia

#6B6B6B

CSS Usage

background-color: #646F5B;
color: #646F5B;
border-color: #646F5B;
Nearest Tailwind: Stone 500 #78716C

Tailwind Shades

50
#F7F8F7
100
#EDEFEC
200
#DBDFD8
300
#C1C8BC
400
#A0AA97
500
#7E8C73
600
#65705C
700
#515A4A
800
#3F4639
900
#30352C
950
#1E211C

Contrast Checker

Text on white

5.29:1

AA Pass AAA Fail

Text on black

3.97:1

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