#666B80

#666B80

Color Values

HEX

#666B80

RGB

102, 107, 128

HSL

228.5, 11.3%, 45.1%

HSV

228.5, 20.3%, 50.2%

CMYK

20.3%, 16.4%, 0.0%, 49.8%

OKLCH

0.5312 0.0335 274.7

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#666B80

#807B66

Analogous

#667880

#6E6680

#666B80

Triadic

#666B80

#80666B

#6B8066

Split Complementary

#666B80

#806E66

#788066

Tetradic

#666B80

#806678

#807B66

#66806E

Color Blindness Simulation

Original

#666B80

Protanopia

#68687B

Deuteranopia

#68687A

Tritanopia

#667776

Achromatopsia

#6B6B6B

CSS Usage

background-color: #666B80;
color: #666B80;
border-color: #666B80;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F7F7F8
100
#EBECEF
200
#D7D9DF
300
#BBBEC9
400
#969AAB
500
#71778E
600
#5A5F72
700
#484C5B
800
#393B47
900
#2C2D35
950
#1B1D22

Contrast Checker

Text on white

5.28:1

AA Pass AAA Fail

Text on black

3.98:1

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