#666457

#666457

Color Values

HEX

#666457

RGB

102, 100, 87

HSL

52.0, 7.9%, 37.1%

HSV

52.0, 14.7%, 40.0%

CMYK

0.0%, 2.0%, 14.7%, 60.0%

OKLCH

0.5011 0.0202 99.9

Properties

Warm Dark Nearest: RAL 7039 Quartz Grey

Color Harmonies

Complementary

#666457

#575966

Analogous

#665D57

#616657

#666457

Triadic

#666457

#576664

#645766

Split Complementary

#666457

#576166

#5D5766

Tetradic

#666457

#57665D

#575966

#665761

Color Blindness Simulation

Original

#666457

Protanopia

#65655A

Deuteranopia

#65655B

Tritanopia

#665D5D

Achromatopsia

#636363

CSS Usage

background-color: #666457;
color: #666457;
border-color: #666457;
Nearest Tailwind: Stone 500 #78716C

Tailwind Shades

50
#F8F8F7
100
#EEEEEC
200
#DEDDD8
300
#C7C5BD
400
#A8A699
500
#8A8775
600
#6E6C5E
700
#58564B
800
#45433B
900
#34332D
950
#21201C

Contrast Checker

Text on white

5.96:1

AA Pass AAA Fail

Text on black

3.53:1

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