#66697F

#66697F

Color Values

HEX

#66697F

RGB

102, 105, 127

HSL

232,8, 10,9%, 44,9%

HSV

232,8, 19,7%, 49,8%

CMYK

19,7%, 17,3%, 0,0%, 50,2%

OKLCH

0,5263 0,0347 279,0

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#66697F

#7F7C66

Analogous

#66757F

#6F667F

#66697F

Triadic

#66697F

#7F6669

#697F66

Split Complementary

#66697F

#7F6F66

#757F66

Tetradic

#66697F

#7F6675

#7F7C66

#667F6F

Color Blindness Simulation

Original

#66697F

Protanopia

#67677A

Deuteranopia

#676778

Tritanopia

#667575

Achromatopsia

#6A6A6A

CSS Usage

background-color: #66697F;
color: #66697F;
border-color: #66697F;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F7F7F8
100
#EBECEF
200
#D7D8DF
300
#BBBDC8
400
#9699AB
500
#72758D
600
#5B5E71
700
#494B5A
800
#393A47
900
#2C2D35
950
#1C1C22

Contrast Checker

Text on white

5,4:1

AA Pass AAA Fail

Text on black

3,89:1

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