#66645D

#66645D

Color Values

HEX

#66645D

RGB

102, 100, 93

HSL

46.7, 4.6%, 38.2%

HSV

46.7, 8.8%, 40.0%

CMYK

0.0%, 2.0%, 8.8%, 60.0%

OKLCH

0.5028 0.0112 93.7

Properties

Warm Dark Nearest: RAL 7039 Quartz Grey

Color Harmonies

Complementary

#66645D

#5D5F66

Analogous

#665F5D

#63665D

#66645D

Triadic

#66645D

#5D6664

#645D66

Split Complementary

#66645D

#5D6366

#5F5D66

Tetradic

#66645D

#5D665F

#5D5F66

#665D63

Color Blindness Simulation

Original

#66645D

Protanopia

#65655F

Deuteranopia

#65655F

Tritanopia

#666060

Achromatopsia

#646464

CSS Usage

background-color: #66645D;
color: #66645D;
border-color: #66645D;
Nearest Tailwind: Stone 500 #78716C

Tailwind Shades

50
#F8F8F7
100
#EEEEEC
200
#DDDCDA
300
#C5C3BF
400
#A5A39C
500
#85837A
600
#6B6961
700
#55544E
800
#43413D
900
#32322E
950
#201F1D

Contrast Checker

Text on white

5.92:1

AA Pass AAA Fail

Text on black

3.55:1

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