#666F60

#666F60

Color Values

HEX

#666F60

RGB

102, 111, 96

HSL

96.0, 7.2%, 40.6%

HSV

96.0, 13.5%, 43.5%

CMYK

8.1%, 0.0%, 13.5%, 56.5%

OKLCH

0.5294 0.0254 132.7

Properties

Cool Dark Nearest: RAL 7023 Concrete Grey

Color Harmonies

Complementary

#666F60

#69606F

Analogous

#6D6F60

#606F62

#666F60

Triadic

#666F60

#60666F

#6F6066

Split Complementary

#666F60

#62606F

#6F606D

Tetradic

#666F60

#606D6F

#69606F

#6F6260

Color Blindness Simulation

Original

#666F60

Protanopia

#6A6A64

Deuteranopia

#696964

Tritanopia

#666667

Achromatopsia

#6C6C6C

CSS Usage

background-color: #666F60;
color: #666F60;
border-color: #666F60;
Nearest Tailwind: Stone 500 #78716C

Tailwind Shades

50
#F7F8F7
100
#EDEEEC
200
#DBDED9
300
#C1C6BD
400
#9FA79A
500
#7E8976
600
#656D5F
700
#50574C
800
#3F443B
900
#30342D
950
#1E211D

Contrast Checker

Text on white

5.24:1

AA Pass AAA Fail

Text on black

4.01:1

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