#51666E

#51666E

Color Values

HEX

#51666E

RGB

81, 102, 110

HSL

196.6, 15.2%, 37.5%

HSV

196.6, 26.4%, 43.1%

CMYK

26.4%, 7.3%, 0.0%, 56.9%

OKLCH

0.4961 0.0282 223.1

Properties

Cool Dark Nearest: NCS S 6000-N Medium Dark Grey

Color Harmonies

Complementary

#51666E

#6E5951

Analogous

#516E68

#51586E

#51666E

Triadic

#51666E

#6E5166

#666E51

Split Complementary

#51666E

#6E5158

#6E6851

Tetradic

#51666E

#68516E

#6E5951

#586E51

Color Blindness Simulation

Original

#51666E

Protanopia

#5A5A6C

Deuteranopia

#59576C

Tritanopia

#526B6A

Achromatopsia

#626262

CSS Usage

background-color: #51666E;
color: #51666E;
border-color: #51666E;
Nearest Tailwind: Gray 600 #4B5563

Tailwind Shades

50
#F6F8F8
100
#EBEEEF
200
#D6DEE1
300
#B8C6CB
400
#92A7AF
500
#6C8893
600
#566D76
700
#45575E
800
#364449
900
#2A3337
950
#1A2023

Contrast Checker

Text on white

6.04:1

AA Pass AAA Fail

Text on black

3.48:1

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