#666B73

#666B73

Color Values

HEX

#666B73

RGB

102, 107, 115

HSL

216.9, 6.0%, 42.5%

HSV

216.9, 11.3%, 45.1%

CMYK

11.3%, 7.0%, 0.0%, 54.9%

OKLCH

0.5262 0.014 259.8

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#666B73

#736E66

Analogous

#667173

#676673

#666B73

Triadic

#666B73

#73666B

#6B7366

Split Complementary

#666B73

#736766

#717366

Tetradic

#666B73

#736671

#736E66

#667367

Color Blindness Simulation

Original

#666B73

Protanopia

#686871

Deuteranopia

#686871

Tritanopia

#66706F

Achromatopsia

#6B6B6B

CSS Usage

background-color: #666B73;
color: #666B73;
border-color: #666B73;
Nearest Tailwind: Zinc 500 #71717A

Tailwind Shades

50
#F7F7F8
100
#ECEDEE
200
#D9DBDD
300
#BEC1C5
400
#9B9FA6
500
#787E87
600
#60656C
700
#4D5056
800
#3C3F44
900
#2E3033
950
#1D1E20

Contrast Checker

Text on white

5.36:1

AA Pass AAA Fail

Text on black

3.92:1

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