#646363

#646363

Color Values

HEX

#646363

RGB

100, 99, 99

HSL

0.0, 0.5%, 39.0%

HSV

0.0, 1.0%, 39.2%

CMYK

0.0%, 1.0%, 1.0%, 60.8%

OKLCH

0.5006 0.0013 17.2

Properties

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

Color Harmonies

Complementary

#646363

#636464

Analogous

#646363

#646363

#646363

Triadic

#646363

#636463

#636364

Split Complementary

#646363

#636463

#636364

Tetradic

#646363

#636463

#636464

#636364

Color Blindness Simulation

Original

#646363

Protanopia

#646463

Deuteranopia

#646463

Tritanopia

#646363

Achromatopsia

#636363

CSS Usage

background-color: #646363;
color: #646363;
border-color: #646363;
Nearest Tailwind: Neutral 500 #737373

Tailwind Shades

50
#F7F7F7
100
#EDEDED
200
#DBDBDB
300
#C2C1C1
400
#A1A0A0
500
#807F7F
600
#676565
700
#525151
800
#403F3F
900
#313030
950
#1F1E1E

Contrast Checker

Text on white

5.99:1

AA Pass AAA Fail

Text on black

3.51:1

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