#646E75

#646E75

Color Values

HEX

#646E75

RGB

100, 110, 117

HSL

204.7, 7.8%, 42.5%

HSV

204.7, 14.5%, 45.9%

CMYK

14.5%, 6.0%, 0.0%, 54.1%

OKLCH

0.5322 0.0164 238.2

Properties

Cool Dark Nearest: dimgrey

Color Harmonies

Complementary

#646E75

#756B64

Analogous

#647573

#646575

#646E75

Triadic

#646E75

#75646E

#6E7564

Split Complementary

#646E75

#756465

#757364

Tetradic

#646E75

#736475

#756B64

#657564

Color Blindness Simulation

Original

#646E75

Protanopia

#686873

Deuteranopia

#686773

Tritanopia

#647272

Achromatopsia

#6C6C6C

CSS Usage

background-color: #646E75;
color: #646E75;
border-color: #646E75;
Nearest Tailwind: Zinc 500 #71717A

Tailwind Shades

50
#F7F7F8
100
#ECEDEE
200
#D9DCDE
300
#BDC3C7
400
#99A2A8
500
#768189
600
#5E676E
700
#4B5358
800
#3B4145
900
#2D3134
950
#1C1F21

Contrast Checker

Text on white

5.21:1

AA Pass AAA Fail

Text on black

4.03:1

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