#645C64

#645C64

Color Values

HEX

#645C64

RGB

100, 92, 100

HSL

300.0, 4.2%, 37.6%

HSV

300.0, 8.0%, 39.2%

CMYK

0.0%, 8.0%, 0.0%, 60.8%

OKLCH

0.4851 0.0161 325.8

Properties

Warm Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#645C64

#5C645C

Analogous

#605C64

#645C60

#645C64

Triadic

#645C64

#64645C

#5C6464

Split Complementary

#645C64

#60645C

#5C6460

Tetradic

#645C64

#64605C

#5C645C

#5C6064

Color Blindness Simulation

Original

#645C64

Protanopia

#616062

Deuteranopia

#616262

Tritanopia

#646160

Achromatopsia

#5E5E5E

CSS Usage

background-color: #645C64;
color: #645C64;
border-color: #645C64;
Nearest Tailwind: Zinc 600 #52525B

Tailwind Shades

50
#F8F7F8
100
#EEEDEE
200
#DDDADD
300
#C4BFC4
400
#A59DA5
500
#857A85
600
#6A626A
700
#554E55
800
#423D42
900
#322F32
950
#201D20

Contrast Checker

Text on white

6.45:1

AA Pass AAA Fail

Text on black

3.26:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026