#51555A

#51555A

Color Values

HEX

#51555A

RGB

81, 85, 90

HSL

213.3, 5.3%, 33.5%

HSV

213.3, 10.0%, 35.3%

CMYK

10.0%, 5.6%, 0.0%, 64.7%

OKLCH

0.4477 0.0096 253.9

Properties

Cool Dark Nearest: NCS S 7000-N Dark Grey

Color Harmonies

Complementary

#51555A

#5A5651

Analogous

#51595A

#51515A

#51555A

Triadic

#51555A

#5A5155

#555A51

Split Complementary

#51555A

#5A5151

#595A51

Tetradic

#51555A

#5A5159

#5A5651

#515A51

Color Blindness Simulation

Original

#51555A

Protanopia

#535359

Deuteranopia

#525258

Tritanopia

#515858

Achromatopsia

#555555

CSS Usage

background-color: #51555A;
color: #51555A;
border-color: #51555A;
Nearest Tailwind: Zinc 600 #52525B

Tailwind Shades

50
#F7F7F8
100
#ECEDEE
200
#D9DBDD
300
#BFC1C5
400
#9CA0A6
500
#797F86
600
#61656B
700
#4D5156
800
#3C3F43
900
#2E3033
950
#1D1E20

Contrast Checker

Text on white

7.51:1

AA Pass AAA Pass

Text on black

2.8:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026