#64647B

#64647B

Color Values

HEX

#64647B

RGB

100, 100, 123

HSL

240.0, 10.3%, 43.7%

HSV

240.0, 18.7%, 48.2%

CMYK

18.7%, 18.7%, 0.0%, 51.8%

OKLCH

0.5118 0.0362 285.1

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#64647B

#7B7B64

Analogous

#646F7B

#6F647B

#64647B

Triadic

#64647B

#7B6464

#647B64

Split Complementary

#64647B

#7B6F64

#6F7B64

Tetradic

#64647B

#7B646F

#7B7B64

#647B6F

Color Blindness Simulation

Original

#64647B

Protanopia

#646475

Deuteranopia

#646474

Tritanopia

#647170

Achromatopsia

#666666

CSS Usage

background-color: #64647B;
color: #64647B;
border-color: #64647B;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F7F7F8
100
#ECECEF
200
#D8D8DF
300
#BBBBC8
400
#9797AA
500
#72728D
600
#5B5B71
700
#49495A
800
#393946
900
#2C2C35
950
#1C1C21

Contrast Checker

Text on white

5.75:1

AA Pass AAA Fail

Text on black

3.65:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026