#666559

#666559

Color Values

HEX

#666559

RGB

102, 101, 89

HSL

55.4, 6.8%, 37.5%

HSV

55.4, 12.7%, 40.0%

CMYK

0.0%, 1.0%, 12.7%, 60.0%

OKLCH

0.504 0.0185 103.1

Properties

Warm Dark Nearest: RAL 7039 Quartz Grey

Color Harmonies

Complementary

#666559

#595A66

Analogous

#665F59

#616659

#666559

Triadic

#666559

#596665

#655966

Split Complementary

#666559

#596166

#5F5966

Tetradic

#666559

#59665F

#595A66

#665961

Color Blindness Simulation

Original

#666559

Protanopia

#66665C

Deuteranopia

#66665D

Tritanopia

#665E5F

Achromatopsia

#646464

CSS Usage

background-color: #666559;
color: #666559;
border-color: #666559;
Nearest Tailwind: Stone 500 #78716C

Tailwind Shades

50
#F8F8F7
100
#EEEEEC
200
#DEDDD9
300
#C6C5BE
400
#A7A69A
500
#888777
600
#6D6C5F
700
#57564C
800
#44433B
900
#33332D
950
#20201D

Contrast Checker

Text on white

5.88:1

AA Pass AAA Fail

Text on black

3.57:1

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